此环境中未提供编译器。 也许您在 JRE 而不是 JDK 上运行？

Question

I'm compiling a project in Eclipse using m2eclipse. I set the JDK path in Eclipse like this:

Windows-->preferences-->installed jres--> jdk1.7.xx  path

But this is showing an error

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE    rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.424s
[INFO] Finished at: Tue Oct 29 15:21:01 IST 2013
[INFO] Final Memory: 5M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-   plugin:3.1:compile (default-compile) on project TEST-WEB: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

Answer 1

1. On your Eclipse IDE, go into Window > Preferences > Java > Installed JREs > and check your installed JREs . You should have an entry with a JDK there.
2. Select the Execution Env as show below. Click OK
3. Then Right-Click on your Project -> Maven -> Update Project

Additionally, you may have to change Maven JRE (see @jlars62 answer) which is as follows. Goto Run -> Run Configurations, selecting the Maven Build I was running (from the left panel). Then, I clicked the JRE tab and selected the option Workspace default JRE

Answer 2

For me, it is exactly what the maven of eclipse complains

So, I press Edit button and change path to the JDK Folder, then clean project and everything starts to work

Answer 3

1. Set the JAVA_HOME environment variable to the JDK root folder - required if you run command line or maven ( mvn ).
   • (Search google for JAVA_HOME for more info)
2. In project properties in section Java Compiler select required JDK - if you run directly from eclipse

Answer 4

For me, nothing worked until I made this change to my pom.xml:

<build>
...
    <plugins>
    ...
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <fork>true</fork>
                <executable>C:\Program Files\Java\jdk1.7.0_45\bin\javac.exe</executable>
            </configuration>
        </plugin>
    </plugins>
</build>

Other Notes

I could see that m2e was executing in a JRE, not the JDK. Nothing I did changed this, including adding this to the eclipse.ini:

-vm
C:\Program Files\Java\jdk1.7.0_45\bin\javaw.exe

In the end I never got m2e to execute in a JDK, but setting the Java compiler explicitly (as above) did the trick.

Answer 5

In my case it was solved by doing this:

Go to your 'Runtime Configuration' and configure your JRE to an JDK.

I copied answer just in case it is deleted for some reason, but the source is here

Answer 6

I was getting this error when trying to do a maven build from within eclipse.

For me, the answer was going to Run -> Run Configurations , selecting the Maven Build I was running (from the left panel). Then, I clicked the JRE tab and selected the option Workspace default JRE

Answer 7

Go to windows -> Preferences -> Java -> Installed JREs

may be jre is already added

click on Add -> Standard VM -> Next -> Directory

and browse for the JDK in my case path was C:\\Program Files\\Java\\jdk1.8.0_111

then Click on finish.

you will see window like this

select JDK -> Apply -> Ok

And You are done.

Answer 8

I got same issue and i just add JAVA_HOME to environment variables .

• If you are using eclipse, just refer https://stackoverflow.com/a/21279068/6097074
• If you are using intellij, just after adding JAVA_HOME open command prompt from project directory and run mvn clean install (don't use intellij terminal).

Answer 9

I tried all of the above, however, still getting the same error message.

In my case an actual JRE was incorrectly used as JRE System Library in the project-specific build path which was obviously overriding all those other settings discussed here.

If that is so in your case try the following:

1. Open the project-specific libraries of the Java Build Path: Right-click "Project > Build Path > Configure Build Path..." and select "Libraries" tab.
2. Select the "JRE System Library" entry and hit "Remove".
3. Hit "Add Library...".
4. A wizard pops up. Select "JRE System Library" and hit "Next >".
5. Now select the correct JDK (in my case "Workspace default JRE", which I configured using a JDK).
6. Close wizard by hitting "Finish".
7. Close "Properties" dialog by hitting "OK".

Answer 10

An alternative if jaipster's answer does not work is to go to:
Window > Preferences > Java > Installed JREs

Then to edit the jre so that it points to the jdk and not the jre (the jre home filed in the jre package editor)

That worked for me.

Answer 11

If you are running the Maven command from cmd , make sure you set the jdk path before running the command. In my case, I have created a .bat file containing the following:

set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_60
start cmd.exe /k "cd c:\aem_proj\sis\aau"

Answer 12

I faced the same issue while trying to build a jar file of my project application using mvn clean install , though the application was working fine while running from Eclipse.

The issue was, indeed too naive, that I had not set the JAVA_HOME environment variable. All I had to do is set JAVA_HOME environment variable to JDK directory, make sure it is not till "\\bin" and without semi-colon ";" .

How I understood it is as:

The application worked fine in Eclipse as JRE System Library was referring to JRE inside the JDK folder instead of external JRE folder without JDK. [As explained very well in other answers]

This configuration does not apply to maven command that we run on command prompt. It will still look for JAVA_HOME variable to access the JRE System library and when it is not found it refers to external JRE folder without JDK.

Answer 13

My answer pertains to the Eclipse in Windows environment.

I went to Preferences --> Java --> Installed JREs I did NOT see the JDK in here. I only saw the JRE here. So I added the JDK and then unchecked the JRE. Then checked JDK. Then I ran the POM file using Run Configurations. Choose the tab JRE and select the option "Workspace Default..." Here are the images

Answer 14

There are several options to specify.

Steps: Right on project in project explorer Go to Run-> Run Configuration -> Click Maven Build -> Click on your build config/or create a new config. You will see the window as the given snapshot below, click on JRE tab there.

You see you have 3 options 1) Workspace Default JRE 2)Execution Environment 3)Alternate JRE 1) Workspace Default JRE is set from 'Window' menu on the top -> Preferences -> Java -> Installed JREs -Here you can add your jdk 2) Execution Environment jdk can be set in pom.xml as mentioned by @ksnortum

<build>
<plugins>
    <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
            <fork>true</fork>
            <executable>C:\Program Files\Java\jdk1.7.0_45\bin\javac.exe</executable>
        </configuration>
    </plugin>
</plugins>

3) Alternate JRE can be used to select a jdk from your directory

Answer 15

Problem statement = No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? intellij

Solution

Please set the Environment variabl e like below to solve the issue

Variable name : JAVA_HOME

Variable Value : C:\\Program Files\\Java\\jdk1.8.0_202

Variable name : M2_HOME

Variable Value : C:\\Program Files\\apache-maven-3.6.0

Moreover , Add Java and maven path in " System Variables " like below:

1. C:\\Program Files\\Java\\jdk1.8.0_202\\bin

2. C:\\Program Files\\apache-maven-3.6.0\\bin

Answer 16

Though the question is about the error with Eclipse setup but thought an answer of fixing this error with IntelliJ and Windows 10 setup may also be helpful here.

1 . Go to File --> Settings --> Build, Execution, Deployment --> Build Tools --> Maven --> Importing

2 . Set JDK for Importer as shown below to JAVA_HOME

Also JAVA_HOME should be set to JDK path at Environment Variables --> System variables and also add %JAVA_HOME%\\bin to Path System variables

Answer 17

For me the JRE was in the PATH environment variable before the JDK path

1. C:\\ProgramData\\Oracle\\Java\\javapath
2. C:\\env\\jdk1.8.0_151\\bin

So I removed 1. Probably swapping them would fix it too.

Answer 18

There is another possible answer to this question, and I may be the only person foolish enough to have stumbled upon this, but I think it's worth adding, since none of the other answers applied as I already had those settings correct.

When you install a JDK, the installer asks you where you want to install the files. By default, on Windows, this is something like C:\\Program Files\\Java\\jdk1.8.0_74 (or whatever version you are installing).

It then asks you for a directory to install the JRE to, which by default is something like C:\\Program Files\\Java\\jre1.8.0_74.

Note that one is jdk 1.8.0_74 and the other is jre 1.8.0_74

I was rushing things, and thinking the installer was asking me the same question twice, set both my JDK and JRE install locations to D:\\devtools\\jdk\\jdk1.8.0_74, resulting in the installer overwriting the JDK with the JRE. This resulted in (among other things) a missing javac.exe in my JDK bin, and the same error the OP reported here in all my maven builds.

Answer 19

I got a solution.

The most common solution for this problem is to change jdk location as my Installed JREs instead of the JRE location but that did not solve my problem this one time.

So I did the below to solve the problem. Expand the Installed JREs tab and you will find a Execution environments tab.

Click on your favourite execution environment. In my case it was JAVASE-1.8 . There it shows 2 options. JDK and JRE . Select JDK there and the problem is solved.

Answer 20

I tried most of the answers without success. What worked for me was (after following https://stackoverflow.com/a/21279068/2408893 ):

• right click on project -> Properties
• select Java Build Path
• select the JRE System Library
• click edit
• In execution environment select a jdk

• click Finish
• build and run

Answer 21

I just wasted 3 hours with this problem until I managed to make it work. I had this error in the Eclipse Terminal when issuing a mvn compile command:

No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

So I read here that I have to make a new system variable called JAVA_HOME and make it point towards the jdk installation folder. However this generated another error:

Source option 1.5 is no longer supported. Use 1.6 or later

Couldn't find a fix for this one so...

So the fix to make it all go away is install Java SE Development Kit 8! I was using 9 thinking that if it's the latest it must be better...

Anyway...

1. Uninstall all java versions from your computer

2. Install JDK8 from here: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

3. Then define the JAVA_HOME system environmental value - tutorial here: https://docs.oracle.com/cd/E19509-01/820-3208/inst_cli_jdk_javahome_t/

4. Restart Eclipse and enjoy! (at least that's what I did)

Hoping this spares some poor wanderer of some trouble.

Answer 22

In my case I had system variable path has "C:\\ProgramData\\Oracle\\Java\\javapath" location.

In "C:\\ProgramData\\Oracle\\Java\\javapath" location java, javaw only there. So I am getting the same error.

Once I removed all files in "C:\\ProgramData\\Oracle\\Java\\javapath" folder my error got resolved.

Answer 23

Try this.

<build>
...
    <plugins>
    ...
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <fork>true</fork>
                <executable> path to jdk \bin\javac.exe</executable>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 24

我遇到了同样的问题，我犯的错误是我只在路径 var 中添加了 jre 路径，而不是 jdk 路径。当 jdk 路径添加到路径并构建 Maven 项目时，它的工作完美。谢谢大家

Answer 25

I did the following change and it worked for me.Hope it helps someone.

Answer 26

Add new JRE definition (select path JDK), worked for me.

http://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftask-add_new_jre.htm

Answer 27

I was getting the same error when I created a new EC2 ubuntu 16.04 instance with Java already installed on it and while running mvn clean package, I encountered this issue and the below solution worked for me.

If you are working on an Ubuntu server, then you can try installing Java again and for that you can use this answer How to install the JDK on Ubuntu Linux

Answer 28

In Windows 7 - 64 bit, there is a permissions problem which prevents the installer from unpacking the file C:\\Program Files\\Java\\jdk1.6.xx\\lib\\tools.jar into your local. This jar file is what maven-compiler-plugin version 3.x uses instead of the usual javac

Solution: Run, as an administrator, the Java JDK installer! And make sure the tools.jar is sitting in the C:\\Program Files\\Java\\jdk1.6.xx\\lib\\

In case you are using m2e maven integration plugin, you want to see the file is visible to Eclipse via the following steps inside Eclipse:

Go to Window -> Preferences -> Java -> installed JREs Select the JDK you are using (C:\\Program Files\\Java\\jdk1.6.xx) Press Edit to see the list of jars including tools.jar, OR you can add it as Add External JAR Then configure the maven run through these steps:

Run->Run configurations->Fill in Name, Base directory and Goals. Then in the same window move to the JRE tab and point to the JDK \\jdk1.6.xx\\

Answer 29

In addition to answer above, I could say that just try to run Maven from the terminal (outside of Eclipse). In this way, if it builds from outside but not in Eclipse, you can understand that the problem should be in Eclipse.

Answer 30

There are several answers regarding this question but all are related to right path configuration of JDK, but with JRE only we can solve this problem.

We just need to make use of deployment assembly to configure the path of packaged war file of the Java EE Project and then re-run the maven-install.

Steps to make use of deployment assembly:

1. Right click on the Jave EE project --> click on Properties --> click on Deployment Assembly

2. Click on Add button --> Click on Archives from the File System --> Click on next --> Click on Add --> Go to the .m2\\respository directory and search for the war file generated --> Select war file --> Click on Open button --> Click on Apply --> OK

3. Right click on the project --> Click on Maven Install under Run As

This will build your project successfully, without any compiler error.

Hope this solves the problem without JDK.

Answer 31

Are you missing any maven build.

Apart from above JRE changes.I still faced similar issue.I was missing JUnit dependency after adding it is working fine.

Hope this will help.

Answer 32

I went to Preferences --> Java --> Installed JREs I did NOT see the JDK in here. I only saw the JRE here. So I added the JDK.

here we have to mandatory remove JRE instead of just unchecking.

Answer 33

right click on your project and run as maven install then again run your application. if this didnt work go to the folder of your project directly start command line and run 'mvn install'

Answer 34

In Linux, doing a docker example, I must not have had the JDK installed just the JRE. After sudo apt install openjdk-8-jdk and setting JAVA_HOME in profile and adding JAVA_HOME/bin to the path, it built!

Answer 35

对我来说，我已经升级到 Big Sur Mac OS，我必须删除它，然后它运行良好。

sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin

Answer 36

This is because it is looking for JDK and is founding JRE.

Recommended Solution:

Window > Preferences > Java > Installed JREs > Edit > Click on directory > Browse JDK path....

That should work fine.
It worked fine for me!!

Answer 37

While building the project, make sure to point the jre to jdk path. This can be done in Run configuration section for the particular project.

Answer 38

Please for windows uses

1. If you are using intellij, just after adding JAVA_HOME open command prompt from project directory and run mvn clean install(don't use intellij terminal).

2. set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_202