Ошибка java runtime как исправить

In this post, we will solve the «Java Runtime Environment not found error». This java error is one of the common errors faced by developers or end-users. Whenever you try to install any software which requires java like eclipse or Minecraft. Also, if you are new to java development, JDK or Java Development Kit is necessary for you.

Following this tutorial will help you to resolve all Java runtime errors. Additionally, you will learn to install, remove and set java variables in Windows10 and Ubuntu.

These are the very common errors you will find related to Java.

java runtime environment not found
java runtime environment not found windows 10
eclipse java runtime environment not found
eclipse java runtime environment not found path
java SE runtime environment not found
java runtime environment not found at bin javaw.exe
unable to load java runtime environment
cannot determine a valid java home
java runtime environment not found mac

Let’s understand some basic concepts of Java runtime first. Check out this post, if you are getting a java command not found error.

Table of Contents

1 What is a runtime environment?
2 JRE vs JDK
3 Java download
4 How to install Java runtime environment step by step
5 Video tutorial-JRE error solved for Windows
6 How to uninstall java from Windows 10
7 How to install java runtime environment in Ubuntu 20.04
8 Video Tutorial — JRE error solved for Ubuntu
9 Frequently Asked Questions (FAQs)
10 Ending notes

What is a runtime environment?

Runtime basically means everything you require to run a program. Which includes environment variables, directory structure, common libraries etc. This can also be a virtual machine like

JRE (Java Runtime Environment)
CLR (Common Language Runtime) for .net framework

The target would be JRE or CLR for your program, need to decide by you. As soon as you execute any program, it’s in run time.

JRE vs JDK

JRE	JDK
Stands for Java Runtime Environment	Stands for Java development kit
To run Java programs, you need JRE	Helps to build Java programs and applets
Platform dependent contains libraries and supporting tool	Platform dependent contains tools development and debugging
JRE does not contain a development kit.	JDK includes JRE also to execute the program

Simple JRE VS JDK

What are the causes of the «Java Runtime environment not found» error

Java is not installed in your system
Java installation not completed (due to errors)
Environment variables of Java are not set
Java conflict due to more than one Java Runtime installation

Because JRE is platform-dependent, I have covered java installation, variable setup and un-installation for Windows and Ubuntu both.

Choose Windows 10 or Ubuntu 20.04 from the post and follow step by step to get java issues resolved.

Java download

Before installation, first, we need to download java —

Step1

Visit oracle.com and download JDK 15 or the latest available for your system. I am downloading it for Windows 10 (64-bit). The latest available versions of java are listed in the screenshot.

How to install Java runtime environment step by step

Let’s solve 1^st reason for «Java runtime environment not found», Because java is not installed.

Step2

First, check for any pre-installed java version —

Open the command prompt with «Run as administrator» and run java command.

C:Usersadmin> java --version

How to install java runtime environment in Windows 10

Step3

Once Download completes. Browse to the «jdk-15.0.1_windows-x64_bin.exe» file and double-click on it, to run the installer. Click Next.

Step4

I recommend keeping «C:Program filesjavajdk-15.0.1 (64-bit)» as the default installation folder. Select Next.

You may select different installation folders also. For example, if you are installing a second instance of java software. Click on change and browse for the target folder.

Step5

Let installation complete, it may take a few minutes.

Step6

Click close. Now you are done with java installation on windows 10.

How to set the environment variable for java in windows10

Set the Environment variable for java in windows 10 by these steps —

Step7

Type «environment» in the search window. Click «open» on «Edit the system environment variables«

Step8

Click on Environment variables.

Step9

Select «Path» > Then click Edit.

Step10

Select New > Give path of java installation directory > For example, «C:Program filesjavajdk-15.0.1bin» in my case. If you have selected a different folder for java installation in step4. You can enter your path to the bin folder.

Click OK.

Step11

Set «classpath» for java. Click «New» in the environment variable window. It allows to set up the new environment variables.

Step12

In «Variable name», enter «classpath«. Also in «variable value» provide path to your java installation till «lib» folder. In my case it is «C:program filesjavajdk-15.0lib > Select OK

Close all open environment variables windows by selecting OK.

How to check what version of java I have?

Installation and java variables have been set up. Now, Let’s validate the java installation and version.

Step13

Open the command prompt with «run as administrator» rights in windows 10.

Step14

Run the «java» command to check your Java and JRE (Java Runtime Environment) version.

java --version

Check java SDK version with javac command

Video tutorial-JRE error solved for Windows

«Java Runtime Environment not found» error fixed for windows 10

How to uninstall java from Windows 10

In case, you are not happy with your old java or JRE version and want to install a new. For that, you need to remove the old Java version.

Cleanup of Java from Windows 10 is pretty easy. Follow these steps to remove java from your system.

Step15

Search add or remove programs and click open

Step16

Select the java program and click Uninstall.

Java software will go from the window. You can clean up java variables also, set up in step10 and 11 earlier.

There are two ways to download and install java or JDK in Ubuntu 20.04

A.) Using the apt command

B.) Download the Oracle JDK package and install it manually

Let’s see both options one by one-

A.) How to install java or JRE in Ubuntu 20.04 using the apt command

To install Java in Ubuntu using the repository, Follow these commands

Step17

Update package index using apt command

$ sudo apt update

Step18

Check if you have any old java versions installed in the system. In my case, java is not installed.

$ sudo java -version

output

Command ‘java’ not found, but can be installed with:

sudo apt install openjdk-11-jre-headless # version 11.0.9.1+1-0ubuntu1~20.04, or
sudo apt install default-jre # version 2:1.11-72
———————-output-truncated————————————

Step19

Run the «apt» command to install java or JRE. I will install default-jre version 2:1.11-72 in my Ubuntu system from the list.

$ sudo apt install default-jre

Select «Y» and press Enter. Let installation complete. it will take a few minutes.

Step20

Check the java version

$ sudo java -version

output

How to Remove java from Ubuntu 20.04

Step21

Run apt command to remove JRE package installed. Press Y and then enter.

$ sudo apt autoremove "JRE package name"

B.) How to install the latest java or JDK in Ubuntu 20.04 from oracle (manually)

Step22

Java JRE download steps —

Visit oracle.com and download JDK 15 or the latest available .deb and transfer to your system. I am downloading Debian package jdk-15.0.1_linux-x64_bin.deb.

Alternatively, you can download java using wget command.

$ sudo wget "download link"

Reference output

Step23

Rename the .deb file using mv command, if required. Then install the Debian package using the dpkg command.

Learn more ways to install .deb package.

$ sudo dpkg -i ".deb-file-path"

output

Default installation directory path of java would be «/usr/lib/jvm/jdk-15.0.1/«. So, make a note of it, as it will be required to set up a Java_HOME variable.

How to set the «JAVA_HOME» variable in Ubuntu 20.04

Set the JAVA_HOME variable for all users in Ubuntu by editing the environment file.

Step24

Edit /system/environment file

$ sudo vi /etc/environment

Add path «/usr/lib/jvm/jdk-15.0.1/bin» to the last of the environment file. Then, save and exit.

Run source command to execute changes made in the environment file.

$ sudo source /etc/environment

Step25

Check your java version

$ sudo java -version

Remove java runtime environment package using dpkg command

Step26

Run the dpkg command with the —purge option to completely clean java from Ubuntu 20.04

$ sudo dpkg --purge "package-name"

For example,

$ sudo dpkg --purge jdk-15.0.1

Video Tutorial — JRE error solved for Ubuntu

Video on «How to fix java runtime environment error in Ubuntu 20.04»

Frequently Asked Questions (FAQs)

Where is the java runtime environment on Windows 10?

The default installation folder for java runtime is «C:Program filesjavajdk-15.0.1bin» in the case of windows 10.

What does Java Runtime Environment do?

Java Runtime Environment (JRE) helps to run java programs like the eclipse.

What is the java runtime environment used for?

Java runtime environment helps to run java programs like Tomcat, eclipse and Jenkins.

What is the java runtime environment?

Java runtime environment JRE is a software that runs on the operating system. Which provides class libraries and resources to run java programs.

How to set the java runtime environment in windows 10?

Type «environment» in the search window. Click «open» on «Edit the system environment variables«
Click on Environment variables.
Select «Path» > Then click Edit.
Select New > Give path of java installation directory > For example, «C:Program filesjavajdk-15.0.1bin«
Click OK

Ending notes

I hope after reading this article, you will be able to solve the «Java Runtime Environment not found error». Because majorly reasons for java related errors are, either Java is not installed or the java variable is not set.

if you still have issues, please comment and let me know, I will try to help you.

Try these fixes to resolve Java Runtime Environment not found error

by Vlad Turiceanu

Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming… read more

Updated on September 19, 2022

Reviewed by
Vlad Turiceanu

Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming… read more

A Java Runtime error might appear if you have installed an older JRE software.
If you have wondered how to fix Java issues, reinstalling it can help you.
To fix the Java Runtime Environment not found error, make sure to have the latest version of Java.
Download the JRE version that corresponds with your system type so you won’t deal with other types of Java issues.

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The Java Development Kit (JDK), the Java Virtual Machine (JVM), and the Java Runtime Environment (JRE) form a trio of Java platform components for developing and running Java apps.

A runtime environment is a piece of software designed to run other software. For example, as the runtime environment for Java, the JRE contains the Java class libraries, the Java class loader, and the JVM.

So if you don’t have JRE installed or you have an older version of the software, you might encounter one of the following messages:

Error: Could not find Java SE Runtime Environment – you don’t have the Java SE version installed on your system
This application needs version 1.x or higher of the Java Runtime Environment – you should update your Java version to the latest you can find on the official website
A Java Runtime Environment(JRE) or Java Development Kit (JDK) must be available to run this app – like the first error, check if you have installed JRE or JDK and if not, install them

Today’s guide will explore the most efficient and easy methods to resolve the Java Runtime Environment not found and the other similar errors with Java. Read on for more details.

Why is JRE not installed?

In Windows and macOS, installing the Java Developmental Kit (JDK) in previous releases optionally installed a Java Runtime Environment (JRE).

However, with JDK 11, Oracle removed JRE to be installed optionally. Therefore, with JDK 11 release, the JRE or Server JRE is no longer offered, and only the JDK is provided.

Also, the Java Runtime Environment not found it could be caused by several other reasons, which we have listed below.

Java is not installed on your PC.
Java installation was not completed due to some errors.
The environment variables of Java are not set.
You might have more than one Java Runtime installation.
A Windows misconfiguration can also trigger this problem.

How do I fix the Java runtime environment not found?

1. Run Windows troubleshooter

Select Start, and click on Settings.
Choose Update & Security, and then click Troubleshoot.
Select the type of troubleshooting you want to run, then select Run the troubleshooter.
Allow the troubleshooter to run and then answer any questions on the screen.

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We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.
Click here to download and start repairing.

You can try the recovery options if you see a message that no changes or updates are necessary. This is a built-in troubleshooter tool from Windows 10.

2. Download Java Runtime Environment (JRE)

Download JRE from the official website.
Choose if you need a 32bit or a 64bit architecture of JRE based on your PC specifications.
Click on the Agree and download button to start the actual download.

If you don’t know which version of Java is the correct version for your system, you can find out by searching in the Start menu the term System Information.

It would be best if you opened the first option that appears after the search and then checked the value under System Type (32-bit or 64-bit).

Read more about this topic

Could not create the Java virtual machine [Fixed]
Could Not Create the Java Virtual Machine: 4 Easy Fixes

3. Install Java Runtime Environment (JRE)

Right-click on the downloaded JRE setup file.
Select Run as administrator and accept the installation prompt.
Click on the Install button to complete the installation.
You will receive a message that the installation was successful. Next, click on close the complete the installation and close the window.

We recommend you check if there is a new Java update each time you encounter this issue. Unfortunately, the software will not update automatically, so you must perform this task manually.

How can I fix Java Runtime Environment not found on Windows 11?

The above solutions also work perfectly well for Windows 11 PC. So, to summarize the answers, here’s what you can do to fix the Java Runtime Environment not found on Windows 11.

Uninstall all Java versions from your PC and install the latest one from the official website.
Configure the Environment Variables for Java on your PC.
Reset your PC.
Check for viruses or malware.

Where is JRE located?

Open the Start menu.
Click on Control Panel.
Select Java.
Switch to the Java tab.
Click View.
Check the Path column for the version of the JRE you have installed.
You will see a path. For example C:appsjdkjrebinjavaw.exe
So, the path is C:appsjdkbin

That is it. You should now have the latest version of Java Runtime Environment on your PC and no longer receive the error message.

Please write us in a comment below if these solutions helped you or if there are any other suggestions that we should include in our article.

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These are the errors I get when I try to run a simple java version in the command window.

I followed the advice on Error: Registry key ‘SoftwareJavaSoftJava Runtime Environment’CurrentVersion’?.
When I went on regedit, here’s what I saw

Which meant that there was nothing to change — right runtime version. I then did the next step which was to «delete all previous versions of Java (using «Programs and Features» uninstall process) and then re-install just the version you want to work with»
However, that didn’t work either……
Here is my current java directory(see that i have everything installed)

And my current environmental variables are

JAVA_HOME - C:Program FilesJavajdk1.7.0_71

Path - C:Program FilesJavajdk1.7.0_71bin

which i believe are correct as well from http://www.oracle.com/technetwork/java/javase/install-windows-189425.html

Does anyone know how i can get rid of this issue? I could do one more uninstall/install but I think that be a waste of time and won’t make a difference.

asked Dec 16, 2014 at 7:29

I want to thank @almas-shaikh for this answer. His comment made me check over C:Program FilesJavajdk1.7.0_71jrebin and see that there was no java.dll library file inside that directory. What I did next was just deleting the jdk and reinstalling it via jdk-7u71-windows-x64.exe executable.
Now when I execute java -home, I get

Now the part I don’t get is how the java.dll library file was deleted in the first place……

answered Dec 16, 2014 at 8:07

Please try the steps.
I hope, it will help you.

Step 1:
Delete all previous versions of Java (using «Programs and Features» uninstall process).
If java folder is remain in «C:/Program Files/…», please delete it.

Step 2:
Clean up your registry(delete your java key). Please follow the below link for step by step clean up
https://java.com/en/download/help/manual_regedit.xml

Step 3:
Reinstall Java and sets system variable JAVA_HOME to your JDK path.
Eg:
JAVA_HOME — C:Program FilesJavajdk1.7.0_71
Path — C:Program FilesJavajdk1.7.0_71bin

Step 4
If step 3 is success, check with below command
1) echo %JAVA_HOME%
2) java -version

answered Dec 16, 2014 at 8:03

I had similar problem. Turns out, even when you have 64-bit OS, your browser is most likely 32-bit and therefore your JAVA too. You need to manually install 64-bit JAVA.

I hope that will help.

answered Apr 20, 2017 at 15:01

try adding «%JAVA_HOME%bin;» in the Path section instead of this «C:Program FilesJavajdk1.7.0_71bin», should make no difference but just try it like this.

answered Dec 16, 2014 at 7:56

aureliusaurelius

3,8866 gold badges40 silver badges73 bronze badges

java installation will create a folder similar to this C:ProgramDataOracleJava. rename and again try cmd java -version.

make sure you have path variable set to latest jre/bin folder

answered Aug 20, 2018 at 18:59

I haven’t seen this answer, but this is how I ran into the problem and then solved it.

I had Java 14.0.2 installed and I needed IntelliJ and Maven installed. This computer is an enterprise computer so I didn’t have much saying on the installation process. I suppose IntelliJ came with Java 10.0.1 or that IT installed it as part of their process and it of course threw all my system out of the window.

So to fix this, I had to get someone from IT to unlock the admin things for me, and then:

I deleted the JRE paths with 10.0.1
Under the Windows tool to uninstall software, I deleted Java 10.0.1 JRE and JDK.
Under the Java directory, also moved or deleted those folders
And then I tested IntelliJ and the Terminal with java -version and javac -version to check if I was getting the same results (got 14.0.2, nice, that is what I was expecting)
And then checked Maven with mvn -version for the apache feedback as well, which will also return which JDK it’s running.

No need to fiddle with registry, or even restart the computer (just to restart the Terminal after Path changes).

answered Sep 1, 2020 at 21:17

When trying to open a Java .jar file through the command prompt, such as using the command “Java -Jar xxxx.jar”, you might encounter the following error message:

Error: opening registry key ‘SoftwareJavaSoftJRE’

Error: could not find java.dll

Error: Could not find Java SE Runtime Environment.

This could be due to several factors, including but not limited to:

Corrupted registry
Missing Java path in your Environment Variables
Java installation folder being moved

For example, we encountered this issue when updating Java SE to the latest version – we likely previously had a 32-bit Java installation, and when running the 64-bit Java installer, our Java path changed.

Error output when trying to run Java commands in Command Prompt.

Luckily, this is fairly easy to fix, as it just requires addressing one of the above problems with the appropriate solution. Follow our steps below to get your Java commands via command prompt working again, and leave a comment in the comments section if you encounter any further issues (or know of a better solution).

Delete all previous versions of Java (using “Programs and Features” uninstall process). If java folder is remains in “C:/Program Files/…”, please delete it.
Clean up your registry (delete your java key):
Go to Start and then Run
Type in ‘regedit’ in the edit field
Go to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Uninstall
Under this Uninstall folder you will find many registry entries within curly brackets.
Regedit uninstall pathway.
Click on Edit tab and then Find
Note: Highlight Uninstall folder before performing search for particular registry.
Enter version string as value to find corresponding registry entry to be deleted.
Once you find registry key, highlight that key and then Right click on it and choose Delete
Confirm the delete and click Yes

Steps for finding registry keys for any version of Java 7

Follow format 7.0.xxx
where xxx can be 100, 120, 130, 140 and so on.
for example:

Type 7.0.100 in search field, finds registry key for Java7 update 10
Type 7.0.120 in search field, finds registry key for Java7 update 12
Type 7.0.180 in search field, finds registry key for Java7 update 18

Steps for finding registry keys for any version of Java 6

Follow format 6.0.xxx
where xxx can be 100, 120, 130, 140 and so on.
for example:

Type 6.0.100 in search field, finds registry key for Java6 update 10
Type 6.0.120 in search field, finds registry key for Java6 update 12
Type 6.0.180 in search field, finds registry key for Java6 update 18

Steps for finding registry keys for any version of Java 1.5

Follow format 1.5.0.xxx
where xxx can be 100, 120, 130, 140 and so on.
for example:

Type 1.5.0.100 in search field, finds registry key for jre1.5.0_01
Type 1.5.0.120 in search field, finds registry key for jre1.5.0_12
Type 1.5.0.180 in search field, finds registry key for jre1.5.0_18
Steps for finding registry keys for any version of Java 1.4

Follow format 1.4.2_xxx
where xxx can be 01, 12, 13, 14 and so on.
for example:

Type 1.4.2_01 in search field, finds registry key for jre1.4.0_01
Type 1.4.2_12 in search field, finds registry key for jre1.4.0_12
Type 1.4.2_18 in search field, finds registry key for jre1.4.0_18

Reinstall Java and set system variable JAVA_HOME to your JRE (or JDK) path.

Eg:

JAVA_HOME - C:Program FilesJavajdk1.7.0_71

Path - C:Program FilesJavajdk1.7.0_71bin

You can check if this was a successful solution with the following commands

echo %JAVA_HOME%

java -version

Manually open command window to Java pathway.As a side note, you can also launch a command prompt directly from within the Java folder – navigate to your C:Program FilesJavabin folder (or wherever your Java is installed), hold Shift + Right click inside the window, and click “Open a command window here”.

Kamil Anwar

Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode.

I’ve been working on Aptana Studio and some JRE required software for a bit of time now , but since yesterday something quite odd happened, as suddenly the software that requires it threw me an error No Java virtual machine was found . Last thing I did before that was restoring my system files permissions thought safe mode as I had some trouble with that , could this have anything to do with it ?

I’ve tried installing JRE once again , no results. However when I run

/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version

I do get the following

java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Aptana gives me the following error

No Java virtual machine
was found after searching the following locations:
/Applications/Aptana Studio 3/AptanaStudio3.app/Contents/MacOS/jre/bin/java
java in your current PATH

And other software such as Spine won’t simply start.

My .bash_profile is the following :

PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
PATH="/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:${PAT$
export PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

The output of echo $PATHis the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin

The output of echo $JAVA_HOME is the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

And Java invocations on the terminal work.

Guidance will be highly appreciated.

I’ve tried installing JRE once again , no results. However when I run

/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version

I do get the following

java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Aptana gives me the following error

No Java virtual machine
was found after searching the following locations:
/Applications/Aptana Studio 3/AptanaStudio3.app/Contents/MacOS/jre/bin/java
java in your current PATH

And other software such as Spine won’t simply start.

My .bash_profile is the following :

PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
PATH="/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:${PAT$
export PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

The output of echo $PATHis the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin

The output of echo $JAVA_HOME is the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

And Java invocations on the terminal work.

Guidance will be highly appreciated.

In this post, I will be sharing how to fix error: could not find java se runtime environment. This error may occur if you are trying to run a simple java -version command or when you try to open a .jar file using the «java -jar xxx.jar» command in the command window. You will face the following message:

Read Also: Bad operand types for binary operator in java

Error: Registry key ‘SoftwareJavaSoftJRE’
Error: could not find java.dll
Error: Could not find Java SE Runtime Environment.

[Fixed] Error: could not find java se runtime environment

1. Go to «Programs and Features» and uninstall all the previous java versions. Check the location «C:/Program Files/…» and delete all the java folders inside it.

2. Also, clean up your registry (delete the java key present inside it).

3. Go to Start and then click on the Run.

4. Type «regedit»

5. Go to the path «HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Uninstall» . Uninstall folder will contain many registry entries within curly brackets as shown below.

6. Now, click on the Edit tab and then Find (Note: Highlight Uninstall folder before searching for the particular registry.)

7. Enter version string as value to find corresponding registry entry to be deleted.

Steps for finding registry keys

a. Any version of Java 7

Follow format 7.0.xxx
where xxx can be 100, 120, 130, 140, and so on

Please refer to below examples:
Type 7.0.100 in the search field, it will find registry key for Java7 update 10
Type 7.0.120 in the search field, it will find registry key for Java7 update 12
Type 7.0.180 in the search field, it will find registry key for Java7 update 18

b. Any version of Java 6

Follow format 6.0.xxx
where xxx can be 100, 120, 130, 140, and so on

Please refer to below examples:
Type 6.0.100 in the search field, it will find registry key for Java6 update 10
Type 6.0.120 in the search field, it will find registry key for Java6 update 12
Type 6.0.180 in the search field, it will find registry key for Java6 update 18

c. Any version of Java 5

Follow format 1.5.0.xxx
where xxx can be 100, 120, 130, 140, and so on

Please refer to below examples:
Type 1.5.0.100 in the search field, it will find registry key for jre1.5.0_01
Type 1.5.0.120 in the search field, it will find registry key for jre1.5.0_12
Type 1.5.0.180 in the search field, it will find registry key for jre1.5.0_18

8. Once you find the registry key, highlight that key and then Right-click on it and choose Delete.

9. Confirm the Delete and click Yes.

After following the above steps, now, reinstall Java and set System variable JAVA_HOME in your machine to your JRE(or JDK) path.

Please find the example below:

JAVA_HOME- C:Program FilesJavajdk1.7.0_80

Path- C:Program FilesJavajdk1.7.0_80bin

How to Check Error is Resolved

You can check if the above solution is correct by executing the following commands in the command window.

1. By printing JAVA_HOME in the command window.

echo %JAVA_HOME%

2. Checking the version of Java in the command window.

java -version

That’s all for today, please mention in the comments in case you know any other way to solve the error: could not find java se runtime environment.

Reference:
Oracle docs

Источник

Following this tutorial will help you to resolve all Java runtime errors. Additionally, you will learn to install, remove and set java variables in Windows10 and Ubuntu.

These are the very common errors you will find related to Java.

java runtime environment not found
java runtime environment not found windows 10
eclipse java runtime environment not found
eclipse java runtime environment not found path
java SE runtime environment not found
java runtime environment not found at bin javaw.exe
unable to load java runtime environment
cannot determine a valid java home
java runtime environment not found mac

Let’s understand some basic concepts of Java runtime first. Check out this post, if you are getting a java command not found error.

What is a runtime environment?

Runtime basically means everything you require to run a program. Which includes environment variables, directory structure, common libraries etc. This can also be a virtual machine like

JRE (Java Runtime Environment)
CLR (Common Language Runtime) for .net framework

The target would be JRE or CLR for your program, need to decide by you. As soon as you execute any program, it’s in run time.

JRE vs JDK

JRE	JDK
Stands for Java Runtime Environment	Stands for Java development kit
To run Java programs, you need JRE	Helps to build Java programs and applets
Platform dependent contains libraries and supporting tool	Platform dependent contains tools development and debugging
JRE does not contain a development kit.	JDK includes JRE also to execute the program

Simple JRE VS JDK

What are the causes of the «Java Runtime environment not found» error

Java is not installed in your system
Java installation not completed (due to errors)
Environment variables of Java are not set
Java conflict due to more than one Java Runtime installation

Because JRE is platform-dependent, I have covered java installation, variable setup and un-installation for Windows and Ubuntu both.

Choose Windows 10 or Ubuntu 20.04 from the post and follow step by step to get java issues resolved.

Java download

Before installation, first, we need to download java —

Step1

Visit oracle.com and download JDK 15 or the latest available for your system. I am downloading it for Windows 10 (64-bit). The latest available versions of java are listed in the screenshot.

Kamil Anwar

I’ve tried installing JRE once again , no results. However when I run

/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version

I do get the following

java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Aptana gives me the following error

No Java virtual machine
was found after searching the following locations:
/Applications/Aptana Studio 3/AptanaStudio3.app/Contents/MacOS/jre/bin/java
java in your current PATH

And other software such as Spine won’t simply start.

My .bash_profile is the following :

PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
PATH="/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:${PAT$
export PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

The output of echo $PATHis the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin

The output of echo $JAVA_HOME is the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

And Java invocations on the terminal work.

Guidance will be highly appreciated.

I’ve tried installing JRE once again , no results. However when I run

/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version

I do get the following

java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Aptana gives me the following error

No Java virtual machine
was found after searching the following locations:
/Applications/Aptana Studio 3/AptanaStudio3.app/Contents/MacOS/jre/bin/java
java in your current PATH

And other software such as Spine won’t simply start.

My .bash_profile is the following :

PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
PATH="/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:${PAT$
export PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

The output of echo $PATHis the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin

The output of echo $JAVA_HOME is the following

/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home

And Java invocations on the terminal work.

Guidance will be highly appreciated.

Read Also: Bad operand types for binary operator in java

Error: Registry key ‘SoftwareJavaSoftJRE’
Error: could not find java.dll
Error: Could not find Java SE Runtime Environment.

[Fixed] Error: could not find java se runtime environment

1. Go to «Programs and Features» and uninstall all the previous java versions. Check the location «C:/Program Files/…» and delete all the java folders inside it.

2. Also, clean up your registry (delete the java key present inside it).

3. Go to Start and then click on the Run.

4. Type «regedit»

5. Go to the path «HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Uninstall» . Uninstall folder will contain many registry entries within curly brackets as shown below.

6. Now, click on the Edit tab and then Find (Note: Highlight Uninstall folder before searching for the particular registry.)

7. Enter version string as value to find corresponding registry entry to be deleted.

Steps for finding registry keys

a. Any version of Java 7

Follow format 7.0.xxx
where xxx can be 100, 120, 130, 140, and so on

b. Any version of Java 6

Follow format 6.0.xxx
where xxx can be 100, 120, 130, 140, and so on

c. Any version of Java 5

Follow format 1.5.0.xxx
where xxx can be 100, 120, 130, 140, and so on

8. Once you find the registry key, highlight that key and then Right-click on it and choose Delete.

9. Confirm the Delete and click Yes.

After following the above steps, now, reinstall Java and set System variable JAVA_HOME in your machine to your JRE(or JDK) path.

Please find the example below:

JAVA_HOME- C:Program FilesJavajdk1.7.0_80

Path- C:Program FilesJavajdk1.7.0_80bin

How to Check Error is Resolved

You can check if the above solution is correct by executing the following commands in the command window.

1. By printing JAVA_HOME in the command window.

echo %JAVA_HOME%

2. Checking the version of Java in the command window.

java -version

That’s all for today, please mention in the comments in case you know any other way to solve the error: could not find java se runtime environment.

Reference:
Oracle docs

Источник

Following this tutorial will help you to resolve all Java runtime errors. Additionally, you will learn to install, remove and set java variables in Windows10 and Ubuntu.

These are the very common errors you will find related to Java.

java runtime environment not found
java runtime environment not found windows 10
eclipse java runtime environment not found
eclipse java runtime environment not found path
java SE runtime environment not found
java runtime environment not found at bin javaw.exe
unable to load java runtime environment
cannot determine a valid java home
java runtime environment not found mac

Let’s understand some basic concepts of Java runtime first. Check out this post, if you are getting a java command not found error.

What is a runtime environment?

Runtime basically means everything you require to run a program. Which includes environment variables, directory structure, common libraries etc. This can also be a virtual machine like

JRE (Java Runtime Environment)
CLR (Common Language Runtime) for .net framework

The target would be JRE or CLR for your program, need to decide by you. As soon as you execute any program, it’s in run time.

JRE vs JDK

JRE	JDK
Stands for Java Runtime Environment	Stands for Java development kit
To run Java programs, you need JRE	Helps to build Java programs and applets
Platform dependent contains libraries and supporting tool	Platform dependent contains tools development and debugging
JRE does not contain a development kit.	JDK includes JRE also to execute the program

Simple JRE VS JDK

What are the causes of the «Java Runtime environment not found» error

Java is not installed in your system
Java installation not completed (due to errors)
Environment variables of Java are not set
Java conflict due to more than one Java Runtime installation

Because JRE is platform-dependent, I have covered java installation, variable setup and un-installation for Windows and Ubuntu both.

Choose Windows 10 or Ubuntu 20.04 from the post and follow step by step to get java issues resolved.

Java download

Before installation, first, we need to download java —

Step1

Visit oracle.com and download JDK 15 or the latest available for your system. I am downloading it for Windows 10 (64-bit). The latest available versions of java are listed in the screenshot.

How to install Java runtime environment step by step

Let’s solve 1^st reason for «Java runtime environment not found», Because java is not installed.

Step2

First, check for any pre-installed java version —

Open the command prompt with «Run as administrator» and run java command.

C:Usersadmin> java --version

How to install java runtime environment in Windows 10

Step3

Once Download completes. Browse to the «jdk-15.0.1_windows-x64_bin.exe» file and double-click on it, to run the installer. Click Next.

Step4

I recommend keeping «C:Program filesjavajdk-15.0.1 (64-bit)» as the default installation folder. Select Next.

You may select different installation folders also. For example, if you are installing a second instance of java software. Click on change and browse for the target folder.

Step5

Let installation complete, it may take a few minutes.

Step6

Click close. Now you are done with java installation on windows 10.

How to set the environment variable for java in windows10

Set the Environment variable for java in windows 10 by these steps —

Step7

Type «environment» in the search window. Click «open» on «Edit the system environment variables«

Step8

Click on Environment variables.

Step9

Select «Path» > Then click Edit.

Step10

Click OK.

Step11

Set «classpath» for java. Click «New» in the environment variable window. It allows to set up the new environment variables.

Step12

Close all open environment variables windows by selecting OK.

How to check what version of java I have?

Installation and java variables have been set up. Now, Let’s validate the java installation and version.

Step13

Open the command prompt with «run as administrator» rights in windows 10.

Step14

Run the «java» command to check your Java and JRE (Java Runtime Environment) version.

java --version

Check java SDK version with javac command

Video tutorial-JRE error solved for Windows

«Java Runtime Environment not found» error fixed for windows 10

How to uninstall java from Windows 10

In case, you are not happy with your old java or JRE version and want to install a new. For that, you need to remove the old Java version.

Cleanup of Java from Windows 10 is pretty easy. Follow these steps to remove java from your system.

Step15

Search add or remove programs and click open

Step16

Select the java program and click Uninstall.

Java software will go from the window. You can clean up java variables also, set up in step10 and 11 earlier.

There are two ways to download and install java or JDK in Ubuntu 20.04

A.) Using the apt command

B.) Download the Oracle JDK package and install it manually

Let’s see both options one by one-

A.) How to install java or JRE in Ubuntu 20.04 using the apt command

To install Java in Ubuntu using the repository, Follow these commands

Step17

Update package index using apt command

$ sudo apt update

Step18

Check if you have any old java versions installed in the system. In my case, java is not installed.

$ sudo java -version

output

Command ‘java’ not found, but can be installed with:

sudo apt install openjdk-11-jre-headless # version 11.0.9.1+1-0ubuntu1~20.04, or
sudo apt install default-jre # version 2:1.11-72
———————-output-truncated————————————

Step19

Run the «apt» command to install java or JRE. I will install default-jre version 2:1.11-72 in my Ubuntu system from the list.

$ sudo apt install default-jre

Select «Y» and press Enter. Let installation complete. it will take a few minutes.

Step20

Check the java version

$ sudo java -version

output

How to Remove java from Ubuntu 20.04

Step21

Run apt command to remove JRE package installed. Press Y and then enter.

$ sudo apt autoremove "JRE package name"

B.) How to install the latest java or JDK in Ubuntu 20.04 from oracle (manually)

Step22

Java JRE download steps —

Visit oracle.com and download JDK 15 or the latest available .deb and transfer to your system. I am downloading Debian package jdk-15.0.1_linux-x64_bin.deb.

Alternatively, you can download java using wget command.

$ sudo wget "download link"

Reference output

Step23

Rename the .deb file using mv command, if required. Then install the Debian package using the dpkg command.

Learn more ways to install .deb package.

$ sudo dpkg -i ".deb-file-path"

output

Default installation directory path of java would be «/usr/lib/jvm/jdk-15.0.1/«. So, make a note of it, as it will be required to set up a Java_HOME variable.

How to set the «JAVA_HOME» variable in Ubuntu 20.04

Set the JAVA_HOME variable for all users in Ubuntu by editing the environment file.

Step24

Edit /system/environment file

$ sudo vi /etc/environment

Add path «/usr/lib/jvm/jdk-15.0.1/bin» to the last of the environment file. Then, save and exit.

Run source command to execute changes made in the environment file.

$ sudo source /etc/environment

Step25

Check your java version

$ sudo java -version

Remove java runtime environment package using dpkg command

Step26

Run the dpkg command with the —purge option to completely clean java from Ubuntu 20.04

$ sudo dpkg --purge "package-name"

For example,

$ sudo dpkg --purge jdk-15.0.1

Video Tutorial — JRE error solved for Ubuntu

Video on «How to fix java runtime environment error in Ubuntu 20.04»

Frequently Asked Questions (FAQs)

Where is the java runtime environment on Windows 10?

The default installation folder for java runtime is «C:Program filesjavajdk-15.0.1bin» in the case of windows 10.

What does Java Runtime Environment do?

Java Runtime Environment (JRE) helps to run java programs like the eclipse.

What is the java runtime environment used for?

Java runtime environment helps to run java programs like Tomcat, eclipse and Jenkins.

What is the java runtime environment?

Java runtime environment JRE is a software that runs on the operating system. Which provides class libraries and resources to run java programs.

How to set the java runtime environment in windows 10?

Ending notes

if you still have issues, please comment and let me know, I will try to help you.

Источник

Try these fixes to resolve Java Runtime Environment not found error

by Vlad Turiceanu

Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming… read more

Updated on September 19, 2022

Reviewed by
Vlad Turiceanu

Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming… read more

A Java Runtime error might appear if you have installed an older JRE software.
If you have wondered how to fix Java issues, reinstalling it can help you.
To fix the Java Runtime Environment not found error, make sure to have the latest version of Java.
Download the JRE version that corresponds with your system type so you won’t deal with other types of Java issues.

XINSTALL BY CLICKING THE DOWNLOAD FILE

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Click Start Scan to find Windows issues that could be causing PC problems.
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Restoro has been downloaded by 0 readers this month.

The Java Development Kit (JDK), the Java Virtual Machine (JVM), and the Java Runtime Environment (JRE) form a trio of Java platform components for developing and running Java apps.

So if you don’t have JRE installed or you have an older version of the software, you might encounter one of the following messages:

Error: Could not find Java SE Runtime Environment – you don’t have the Java SE version installed on your system
This application needs version 1.x or higher of the Java Runtime Environment – you should update your Java version to the latest you can find on the official website
A Java Runtime Environment(JRE) or Java Development Kit (JDK) must be available to run this app – like the first error, check if you have installed JRE or JDK and if not, install them

Today’s guide will explore the most efficient and easy methods to resolve the Java Runtime Environment not found and the other similar errors with Java. Read on for more details.

Why is JRE not installed?

In Windows and macOS, installing the Java Developmental Kit (JDK) in previous releases optionally installed a Java Runtime Environment (JRE).

However, with JDK 11, Oracle removed JRE to be installed optionally. Therefore, with JDK 11 release, the JRE or Server JRE is no longer offered, and only the JDK is provided.

Also, the Java Runtime Environment not found it could be caused by several other reasons, which we have listed below.

Java is not installed on your PC.
Java installation was not completed due to some errors.
The environment variables of Java are not set.
You might have more than one Java Runtime installation.
A Windows misconfiguration can also trigger this problem.

How do I fix the Java runtime environment not found?

1. Run Windows troubleshooter

Select Start, and click on Settings.
Choose Update & Security, and then click Troubleshoot.
Select the type of troubleshooting you want to run, then select Run the troubleshooter.
Allow the troubleshooter to run and then answer any questions on the screen.

You can try the recovery options if you see a message that no changes or updates are necessary. This is a built-in troubleshooter tool from Windows 10.

2. Download Java Runtime Environment (JRE)

Download JRE from the official website.
Choose if you need a 32bit or a 64bit architecture of JRE based on your PC specifications.
Click on the Agree and download button to start the actual download.

If you don’t know which version of Java is the correct version for your system, you can find out by searching in the Start menu the term System Information.

It would be best if you opened the first option that appears after the search and then checked the value under System Type (32-bit or 64-bit).

Read more about this topic

Could not create the Java virtual machine [Fixed]
Runtime Error 52: Bad Filename or Number [Fix]
Runtime Error 57121: Application-Defined or Object-Defined [Fix]
Runtime Error 62: Input Past End of File [Fix]

3. Install Java Runtime Environment (JRE)

Right-click on the downloaded JRE setup file.
Select Run as administrator and accept the installation prompt.
Click on the Install button to complete the installation.
You will receive a message that the installation was successful. Next, click on close the complete the installation and close the window.

We recommend you check if there is a new Java update each time you encounter this issue. Unfortunately, the software will not update automatically, so you must perform this task manually.

How can I fix Java Runtime Environment not found on Windows 11?

The above solutions also work perfectly well for Windows 11 PC. So, to summarize the answers, here’s what you can do to fix the Java Runtime Environment not found on Windows 11.

Uninstall all Java versions from your PC and install the latest one from the official website.
Configure the Environment Variables for Java on your PC.
Reset your PC.
Check for viruses or malware.

Where is JRE located?

Open the Start menu.
Click on Control Panel.
Select Java.
Switch to the Java tab.
Click View.
Check the Path column for the version of the JRE you have installed.
You will see a path. For example C:appsjdkjrebinjavaw.exe
So, the path is C:appsjdkbin

That is it. You should now have the latest version of Java Runtime Environment on your PC and no longer receive the error message.

Please write us in a comment below if these solutions helped you or if there are any other suggestions that we should include in our article.

Still having issues? Fix them with this tool:

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Источник

A runtime error in Java is an application error that occurs during the execution of a program. A runtime error occurs when a program is syntactically correct but contains an issue that is only detected during program execution. These issues cannot be caught at compile-time by the Java compiler and are only detected by the Java Virtual Machine (JVM) when the application is running.

Runtime errors are a category of exception that contains several more specific error types. Some of the most common types of runtime errors are:

IO errors
Division by zero errors
Out of range errors
Undefined object errors

Runtime Errors vs Compile-Time Errors

Compile-time errors occur when there are syntactical issues present in application code, for example, missing semicolons or parentheses, misspelled keywords or usage of undeclared variables.

These syntax errors are detected by the Java compiler at compile-time and an error message is displayed on the screen. The compiler prevents the code from being executed until the error is fixed. Therefore, these errors must be addressed by debugging before the program can be successfully run.

On the other hand, runtime errors occur during program execution (the interpretation phase), after compilation has taken place. Any code that throws a runtime error is therefore syntactically correct.

Runtime Errors vs Logical Errors

A runtime error could potentially be a legitimate issue in code, for example, incorrectly formatted input data or lack of resources (e.g. insufficient memory or disk space). When a runtime error occurs in Java, the compiler specifies the lines of code where the error is encountered. This information can be used to trace back where the problem originated.

On the other hand, a logical error is always the symptom of a bug in application code leading to incorrect output e.g. subtracting two variables instead of adding them. In case of a logical error, the program operates incorrectly but does not terminate abnormally. Each statement may need to be checked to identify a logical error, which makes it generally harder to debug than a runtime error.

What Causes Runtime Errors in Java

The most common causes of runtime errors in Java are:

Dividing a number by zero.
Accessing an element in an array that is out of range.
Attempting to store an incompatible type value to a collection.
Passing an invalid argument to a method.
Attempting to convert an invalid string to a number.
Insufficient space in memory for thread data.

When any such errors are encountered, the Java compiler generates an error message and terminates the program abnormally. Runtime errors don’t need to be explicitly caught and handled in code. However, it may be useful to catch them and continue program execution.

To handle a runtime error, the code can be placed within a try-catch block and the error can be caught inside the catch block.

Runtime Error Examples

Division by zero error

Here is an example of a java.lang.ArithmeticException, a type of runtime exception, thrown due to division by zero:

public class ArithmeticExceptionExample {
public static void main(String[] args) {
          int a = 10, b = 0;
          System.out.println("Result: "+ a/b);
    }
}

In this example, an integer a is attempted to be divided by another integer b, whose value is zero, leading to a java.lang.ArithmeticException:

Exception in thread "main" java.lang.ArithmeticException: / by zero
        at ArithmeticExceptionExample.main(ArithmeticExceptionExample.java:4)

Accessing an out of range value in an array

Here is an example of a java.lang.ArrayIndexOutOfBoundsExceptionthrown due to an attempt to access an element in an array that is out of bounds:

public class ValueOutOfRangeErrorExample {
    public static void main(String[] args) {
        int arr[] = new int[5];
        System.out.println("5th element in array: " + arr[5]);
    }
}

In this example, an array is initialized with 5 elements. An element at position 5 is later attempted to be accessed in the array, which does not exist, leading to a java.lang.ArrayIndexOutOfBoundsException runtime error:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 5 out of bounds for length 5
    at ValueOutOfRangeErrorExample.main(ValueOutOfRangeErrorExample.java:4)

How to Solve Runtime Errors

Runtime errors can be handled in Java using try-catch blocks with the following steps:

Surround the statements that can throw a runtime error in try-catch blocks.
Catch the error.
Depending on the requirements of the application, take necessary action. For example, log the exception with an appropriate message.

To illustrate this, the code in the earlier ArithmeticException example can be updated with the above steps:

public class ArithmeticExceptionExample {
    public static void main(String[] args) {
        try {
            int a = 10, b = 0;
            System.out.println("Result: " + a/b);
        } catch (ArithmeticException ae) {
            System.out.println("Arithmetic Exception: cannot divide by 0");
        }
        System.out.println("Continuing execution...");
    }
}

Surrounding the code in try-catch blocks like the above allows the program to continue execution after the exception is encountered:

Arithmetic Exception: cannot divide by 0
Continuing execution…

Runtime errors can be avoided where possible by paying attention to detail and making sure all statements in code are mathematically and logically correct.

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Источник

Содержание

JAR-файлы не открываются в Windows 10 [FIX]
Файлы JAR не открываются в Windows 10 – как мы можем это исправить?
Исправлено – файлы Jar не открываются в Windows 10
Загрузите этот инструмент, мы настоятельно рекомендуем
Не устанавливается Java на Windows
Почему Java не скачивается
Ошибки при установке
Error Java Installer
Ошибка 1603
Ошибка 1618
Unable to install Java
Java Destination Folder
Не запускается Java
Почему не работает Java и как его включить в браузере?
Google Chrome
Internet Explorer
Opera
Mozilla Firefox
Apple Safari
«Javac» не работает правильно в Windows 10
19 ответов
Исправлено: Javac не распознается в Windows 10 —
Шаг 1: Установка Java Development Kit (JDK)
Шаг 2: настройка переменная среды Java обновление системного пути
Бонусный шаг: проверка успешности конфигурации

JAR-файлы не открываются в Windows 10 [FIX]

Многие веб-сайты используют Java для предоставления вам определенных функций. Помимо веб-сайтов, Java и Java-приложения могут также запускаться на вашем ПК локально.

Java-приложения сохраняются в виде jar-файлов, но многие пользователи сообщают, что jar-файлы не открываются в Windows 10. Хотя это может быть большой проблемой, но есть способ ее исправить!

Файлы JAR не открываются в Windows 10 – как мы можем это исправить?

Исправлено – файлы Jar не открываются в Windows 10

Если вы не можете запустить jar-файлы на ПК с Windows 10, возможно, вам придется переустановить Java Runtime Environment. Для этого выполните следующие действия:

После этого перейдите на веб-сайт Java и загрузите последнюю версию программного обеспечения.

После установки проверьте, решена ли проблема. Имейте в виду, что удаление предыдущей установки Java не обязательно, поэтому вы можете пропустить этот шаг и просто установить последнюю версию поверх.

Java также будет автоматически проверять наличие обновлений, и если обновления будут доступны, вы получите уведомление.

Загрузите этот инструмент, мы настоятельно рекомендуем

Решение 2. Установите сопоставление файлов

Файлы Jar не могут быть запущены на вашем компьютере, если у вас нет соответствующих ассоциаций. Например, файлы JAR могут быть связаны для запуска с другими приложениями, или они могут полностью не иметь ассоциации файлов.

Если ситуация последняя, вы не сможете запускать jar-файлы на вашем ПК. Однако вы можете легко решить эту проблему, изменив сопоставление файлов для файлов JAR. Для этого выполните следующие действия:

Этот метод предлагает ограниченные возможности, и вы можете выбирать только приложения, распознаваемые Windows 10. К счастью, есть другой способ, который вы можете попробовать. Чтобы изменить ассоциации файлов, выполните следующие действия:

Обнаружены проблемы с ассоциацией файлов Windows? Не беспокойтесь, мы вернулись с этим руководством!

Решение 3 – используйте Jarfix

Если вы не можете открыть файлы JAR в Windows 10, вы можете решить проблему с помощью Jarfix. Как упоминалось ранее, эти типы проблем могут возникать из-за ассоциации файлов, но вы можете легко исправить их с помощью этого простого приложения.

Для этого выполните следующие действия:

После использования этого приложения вы сможете запускать файлы JAR в Windows 10 без каких-либо проблем.

Процесс довольно прост, и вы можете сделать это, выполнив следующие действия:

После этого вам необходимо выполнить следующие шаги:

После этого ваш файл jar должен открыться без проблем. Помните, что вам не нужно перемещать файл JAR в корневой каталог, но благодаря этому вы сможете быстрее получить доступ к файлу.

Работа в командной строке будет похожа на прогулку по парку после прочтения нашего руководства!

Решение 6 – используйте JAR Runner

Кроме того, вы также можете открыть JAR-файлы с помощью JAR Runner. Это простое и бесплатное приложение, поэтому обязательно скачайте JAR Runner.

Если вы не можете открыть загруженный файл JAR, вам необходимо проверить его расширение. Некоторые веб-браузеры могут не сохранять файлы JAR должным образом, поэтому вам нужно проверить их расширение.

Для этого выполните следующие действия:

Если эта проблема не устранена, вы можете проверить свой браузер.Иногда он может загружать файлы JAR неправильно и может вызвать эту проблему.

Чтобы исправить это, обязательно используйте другой браузер для загрузки файла и проверьте, решает ли это проблему.

Файлы JAR, не открывающиеся в Windows 10, могут быть большой проблемой, особенно если вы часто используете приложения Java. Тем не менее, вы сможете решить проблему, просто воспользовавшись одним из наших решений!

Дайте нам знать, если один из них работал для вас в комментариях ниже!

Узнайте, как запускать jar-файлы, как эксперт, с нашим полным руководством!

Примечание редактора . Это сообщение было первоначально опубликовано в апреле 2017 года и было обновлено и обновлено для обеспечения свежести, точности и полноты. Мы хотим быть уверены, что в нашем списке представлены лучшие продукты, которые будут соответствовать вашим потребностям.

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Не устанавливается Java на Windows

Работа некоторого программного обеспечения зависит от вспомогательных утилит и приложений. Поэтому пользователи желают быстрее решить проблему, когда не работает уже установленная Java. Ошибки могут возникнуть и раньше, когда не устанавливается приложение Java на компьютер с ОС Windows. Разберемся в каждой проблеме и узнаем, что делать.

Почему Java не скачивается

Чтобы ответить на вопрос, что делать, если модуль Джава не скачивается на компьютер, важно понять, почему установщик не выполняет функций по загрузке библиотек.

Загружаемый на компьютер файл не содержит требующихся компонентов, а просто скачивает необходимые файлы из виртуальных библиотек через интернет. Важно проверить работу файрволов, антивирусов и браузеров. Такое ПО блокирует фоновую загрузку Java.

Решение проблемы достигается двумя вариантами: настройка приложений или скачивание полноценного установщика с нашего и официального сайта Джава. Обновите антивирус, просмотрите параметры блокировок.

Ошибки при установке

Если файл скачался, а Java не устанавливается на Windows 7, 8, 10 или XP, то проблема глубже.

Способы решения проблемы:

С остальными ошибками Джава на Виндовс стоит познакомиться поближе.

Error Java Installer

Если не запускается установщик программы Java, обратите внимание на подключение к интернету. Лучше продолжить процесс в автономном режиме, скачав исполняемый файл с соответствующей пометкой.

Когда установленная Джава не открывается, то используется программа Windowsfix. ПО помогает в устранении сотен ошибок, включая те, что встречаются на Java.

Ошибка 1603

Ошибка Java с пометкой Error Code: 1603 появляется в процессе установки обновления. Причина до сих пор не выявлена разработчиками.

Предлагаются следующие способы решения:

После переустановки приложения верните флажок на место.

Ошибка 1618

Чтобы исправить ошибку Java 1618, воспользуйтесь следующей инструкцией:

Причина ошибки 1618 при установке Java на компьютер разработчиками не выяснена.

Unable to install Java

Java Destination Folder

Ошибка папки назначения Destination Folder возникает на 32-разрядных версиях ОС Windows. Для решения проблемы создается новая папка в следующей директории: «C:Program Files (x86)». Если есть какое-то содержание, то его нужно удалить.

Не запускается Java

Для начала убедитесь, что при установке не возникало неполадок и системных сообщений.

Как запустить программу Java, если возникают ошибки:

Приложение работает постоянно, но в фоновом режиме. Иными словами, вопрос, как открыть программу Java на компьютере, не имеет ответа. Главное – настроить взаимодействие с браузерами.

Источник

Почему не работает Java и как его включить в браузере?

Многие пользователи интернет зачастую сталкиваются с тем, что на сайтах не работает выпадающее меню, не проигрываются видеоролики, ничего не происходит при нажатии на кнопки и пр. Или, к примеру, не показываются картинки, а вместо них появляется надпись: «В этом плагине имеются уязвимости безопасности. Щелкните здесь для включения плагина Java(TM) Platform SE 7 U». Всё это связано с работой плагина Java, который присутствует в браузерах.

Если Вы столкнулись с какими-либо проблемами при отображении веб-страниц, проверьте включен ли у Вас плагин Java. Чтобы Вам было легче это сделать, я написал небольшой скрипт, который проверяет браузер, и выводит соответствующую надпись. Вот результат анализа для Вашего браузера:

Если Выше написано, что JavaScript включен, то всё в порядке, в противном случае его надо включить. Порядок действий отличается немного для каждого браузера, поэтому остановимся на каждом из них.

Google Chrome

1) Заходим в раздел «Настройки»
2) Опускаемся вниз страницы и нажимаем ссылку «Показать дополнительные настройки»
3) Нажимаем кнопку «Настройки контента»
4) В разделе «JavaScript» активируем пункт «Разрешить всем сайтам использовать JavaScript»
5) Нажимаем «Готово»

Внимание! С апреля 2015 года в новых версиях браузера Chrome плагин Java отключен по умолчанию! Как это исправить, читайте здесь!

Internet Explorer

ie java

Opera

1) Нажимаем сочетание клавиш «Ctrl+F12»
2) В разделе «Содержимое» активируем пункт «Включить JavaScript»
3) Нажимаем «OK»

Mozilla Firefox

1) Нажимаем сочетание клавиш «Ctrl+Shift+A»
2) Переходим в раздел «Плагины»
3) Напротив модуля Java(TM) Platform ставим переключатель в положение «Всегда включать»
4) Закрываем вкладку «Управление дополнениями»

Apple Safari

1) Нажимаем сочетание клавиш «Ctrl+,»
2) Переходим на вкладку «Безопасность»
3) В разделе «Веб-содержимое» активируем опции «Включить Java» и «Включить JavaScript»
4) Закрываем окошко

Теперь Вы знаете не только как проверить, работает ли JavaScript в Вашем браузере (достаточно открыть эту статью и прочитать результат), но и как включить Java в Firefox, Chrome, IE, Opera и Safari!

Источник

«Javac» не работает правильно в Windows 10

результат этого: «javac» не распознается как внутренняя или внешняя команда.

но я отредактировал путь с правильной ссылкой jdk, потому что когда я использую «java», это нормально.

теперь я попробовал в консоли с этой командой: PATH=%PATH%;»C:Program FilesJavajdk1.7.0_79bin»

и когда я извлекаю эту команду, когда я использую «javac», она работает, но теперь, когда я открываю другую консоль, она не работает или когда я перезапускаю консоль, эта команда не распознается.

в чем может быть проблема?

19 ответов

java является частью JRE, а не JDK.

вам нужно добавить JDK bin в системный путь, в

«Панель Управления» / System / Advanced / «Переменные Среды»

вот как я настраиваю системную переменную в Windows 10:

после добавления C:Program файлыJavajdk1.8.0_73bin для системных переменных я отключил командную строку и открыл другую. Потом сработало.

может быть, немного поздно, но у меня была такая же проблема.

Нажмите кнопку «Переместить вверх» для пути Java и переместите его сверху.

Исправлена проблема для меня

Я совершенно новичок в java и потратил часы, пытаясь решить проблемы с PATH и CLASSPATH. Был один человек, который сказал перезапустить командную строку после изменения переменных среды; это было для меня. При тестировании различных конфигураций перед тестированием обязательно перезапустите командную строку. Похоже, есть как минимум 2 разных способа настройки. Я пошел со следующим:

1) в системных переменных, добавить

JAVA_HOME = c:program файлы (x86)javajdk1.8.0_121

2) в системных переменных, добавьте к существующему пути.

просто добавьте C:Program файлыJavajdk1.7.0_80bin как путь в переменных среды. нет необходимости добавлять java.exe и javac.exe в этом направлении. ЭТО РАБОТАЕТ

Я добавил ниже путь в переменной среды

;%переменной JAVA_HOME%/bin вместо %переменной JAVA_HOME%ОГРН

(2) переместите этот путь в начало всех остальных путей.

(3) Удалите все другие пути Java, которые могут существовать.

по какой-то причине мне удалось добавить кавычки в папку path в windows 10. не C:Program файлы1.8.0_111\на Java с JDK bin, но «C:Program файлы1.8.0_111\Ява версии JDK бин».

наконец-то! убедитесь, что нет пробелов до и после пути и поместите двоеточие с обеих сторон без пробелов

путь для текущего пользователя, вместо этого вы можете добавить CLASSPATH и ниже ссылку поможет вам больше путь и путь к классам

Я добавил ниже путь в переменной среды

C:Program файлыпапку Javajdk1.8._91 ОГРН

а затем скомпилировал программу, но получил ошибку, затем я перезапустил систему и снова скомпилировал программу

в этот раз это сработало 🙂

добавьте путь java к переменным среды и переместите его в начало всех доступных там путей. У меня получилось.

в окне поиска введите «переменные среды» это должно дать вам ссылку на редактирование переменных. На странице редактирования переменных есть верхний раздел и Нижний раздел в нижнем разделе Добавить новый, введите путь C:Program FilesJavajdk-10bin это отлично сработало для меня, и он все время находит компилятор.

вид избиения мертвой лошади сейчас, но я хочу прояснить одну вещь, которая может быть не совсем очевидной. Да, действительно, вам нужно отредактировать переменную среды PATH, как уже неоднократно указывалось. Ключом для меня было редактировать путь под система переменные. Я нечаянно отредактировал путь под пользователей переменные. Почему это так важно? На моей машине я должен войти в систему как администратор для редактирования переменных среды. Поэтому редактирование пользовательских переменных не помогло потому что я запускаю командную строку под своей учетной записью login (non-admin). Гррр!

кроме того, я обнаружил, что закрытие окна командной строки и его повторное открытие после обновления переменной PATH было необходимо. Изменение порядка значений, добавление точки с запятой и т. д. для меня это не имело значения.

что я сделал:- я набрал ; случайно впереди в переменной path, а затем нажмите OK, после этого, если я снова отредактирую его, он нигде не будет на той же странице, что и раньше, он открыл новую страницу, как определено для пользовательских переменных, а затем я смог удалить двойные кавычки перед переменной PATH. тогда все работает нормально. 🙂

Источник

Исправлено: Javac не распознается в Windows 10 —

«Javac не распознается как внутренняя или внешняя команда”- это ошибка, с которой часто сталкиваются люди, пытающиеся скомпилировать программы на Java в Windows с помощью командной строки. Это также может встретиться, когда пользователи пытаются проверить текущую версию основного компилятора Java.

Javac (произносится «java-see»), является основным компилятором Java, включенным в JDK (Java Development Kit) разработано корпорацией Oracle. Компилятор предназначен для приема исходного кода, соответствующего Спецификации языка Java (JL) и преобразует его в байт-код Java в соответствии с JVMs Спецификация виртуальной машины Java.

Что вызывает Javac не распознанная ошибка

«Javac не распознается как внутренняя или внешняя команда”Возникает ошибка, когда в командной строке не удается найти переменную Java PATH. Это может произойти по двум причинам:

Если вы изо всех сил пытаетесь решить эту конкретную проблему в Windows 10, эта статья предоставит вам несколько руководств, которые гарантированно решат эту проблему. Ниже у вас есть пара шагов, которые другие пользователи в аналогичной ситуации успешно использовали, чтобы решить проблему.

Для достижения наилучших результатов выполните следующие шаги, чтобы убедиться, что проблема решена для вашего конкретного сценария. Давай начнем!

Шаг 1: Установка Java Development Kit (JDK)

Одна из основных причин возникновения этой ошибки заключается в том, что пользователи, которые только начинают изучать Java, путают Java Runtime Environment (JRE) с Java Development Kit (JDK).

JRE является частью JDK, но большую часть времени скачивается отдельно. Многие программы, использующие Java Runtime, включают его в свои установочные пакеты.

Поскольку существует очень мало причин, по которым вам понадобится Java Development Kit (JDK), если вы не заинтересованы в Java Development, вы, возможно, полагали, что Javac уже был установлен JRE, но на самом деле вам нужно установить целый Java Development Kit.

Если вы считаете, что этот сценарий применим к вашей ситуации, вот краткое руководство по установке Java Development Kit (JDK), чтобы решить «Джавац не признан» ошибка:

Замечания: В качестве дополнительной рекомендации запишите путь установки в разделе «Установить в», поскольку он вам понадобится в Шаг 2.

Теперь, когда вы убедились, что установили правильный пакет, который устанавливает JavaC, перейдите к шагу 2, где мы убедимся, что вы правильно указали путь к JavaC.

Шаг 2: настройка переменная среды Java обновление системного пути

Прежде чем мы начнем с этого процесса, важно понимать, что следующие процедуры применимы, только если вы убедились, что Java Development Kit правильно установлен (Шаг 1).

Если вы установили JDK и по-прежнему получаетеJavac не распознается как внутренняя или внешняя команда«Вы только что наткнулись на одну из самых распространенных технических проблем, с которыми сталкиваются новички в Java. Чтобы завершить разработку Java Development Kit для Windows, вам нужно выполнить ряд ручных шагов. Эти шаги должны всегда следовать за установкой JDK, даже после обновления комплекта разработки Java.

Вот краткое руководство по установке правильной переменной среды Java и обновлению системного пути:

Замечания: Если вы прослушали наш совет на шаге 1 и записали путь установки JDK, вы можете вставить его прямо в Значение переменной.

Бонусный шаг: проверка успешности конфигурации

Есть еще один шаг, который вы можете выполнить в командной строке, чтобы убедиться, что вы успешно настроили путь переменной среды Java. Следуйте инструкциям ниже, чтобы увидеть, работает ли ваша конфигурация:

Источник

What is a runtime environment?

JRE vs JDK

What are the causes of the «Java Runtime environment not found» error

Java download

How to install Java runtime environment step by step

How to install java runtime environment in Windows 10

How to set the environment variable for java in windows10

How to check what version of java I have?

Video tutorial-JRE error solved for Windows

How to uninstall java from Windows 10

A.) How to install java or JRE in Ubuntu 20.04 using the apt command

How to Remove java from Ubuntu 20.04

B.) How to install the latest java or JDK in Ubuntu 20.04 from oracle (manually)

Java JRE download steps —

How to set the «JAVA_HOME» variable in Ubuntu 20.04

Remove java runtime environment package using dpkg command

Video Tutorial — JRE error solved for Ubuntu

Frequently Asked Questions (FAQs)

Where is the java runtime environment on Windows 10?

What does Java Runtime Environment do?

What is the java runtime environment used for?

What is the java runtime environment?

How to set the java runtime environment in windows 10?

Ending notes

Why is JRE not installed?

How do I fix the Java runtime environment not found?

1. Run Windows troubleshooter

2. Download Java Runtime Environment (JRE)

3. Install Java Runtime Environment (JRE)

How can I fix Java Runtime Environment not found on Windows 11?

Where is JRE located?

Newsletter

Steps for finding registry keys for any version of Java 7

Steps for finding registry keys for any version of Java 6

Steps for finding registry keys for any version of Java 1.5

Kamil Anwar

[Fixed] Error: could not find java se runtime environment

Steps for finding registry keys

a. Any version of Java 7

b. Any version of Java 6

c. Any version of Java 5

How to Check Error is Resolved

What is a runtime environment?

JRE vs JDK

What are the causes of the «Java Runtime environment not found» error

Java download

Kamil Anwar

[Fixed] Error: could not find java se runtime environment

Steps for finding registry keys

a. Any version of Java 7

b. Any version of Java 6

c. Any version of Java 5

How to Check Error is Resolved

What is a runtime environment?

JRE vs JDK

What are the causes of the «Java Runtime environment not found» error

Java download

How to install Java runtime environment step by step

How to install java runtime environment in Windows 10

How to set the environment variable for java in windows10

How to check what version of java I have?

Video tutorial-JRE error solved for Windows

How to uninstall java from Windows 10

A.) How to install java or JRE in Ubuntu 20.04 using the apt command

How to Remove java from Ubuntu 20.04

B.) How to install the latest java or JDK in Ubuntu 20.04 from oracle (manually)

Java JRE download steps —

How to set the «JAVA_HOME» variable in Ubuntu 20.04

Remove java runtime environment package using dpkg command

Video Tutorial — JRE error solved for Ubuntu

Frequently Asked Questions (FAQs)

Where is the java runtime environment on Windows 10?

What does Java Runtime Environment do?

What is the java runtime environment used for?

What is the java runtime environment?

How to set the java runtime environment in windows 10?

Ending notes

Why is JRE not installed?

How do I fix the Java runtime environment not found?

1. Run Windows troubleshooter