Maven build path specifies execution environment J2SE-1 5 even though I changed it to 1 7

Question

In Eclipse Juno  I installed the latest m2e plugin  1 2 20120903-1050    In preferences  I have added jdk1 7 0 11 in Java -  Installed JREs -  Add  and then specified the location  C  Program Files Java jdk1 7 0 11    When I create a new Maven project and run it  I get a warning      Build path specifies execution environment J2SE-1 5  There are no JREs installed in the workspace that are strictly compatible with this environment    I am not sure how to resolve this   I believe it is a Maven problem because I do not have this error when I run normal Java projects   I read here that I should change the  maven-compiler-plugin pom  and change the source and target from 1 5 to something more appropriate   In my case  1 7   I have done this  but I still get the warning

User · Answer

All of the answers above may work for the time being but whenever you run maven on the command line or Maven → Update project… the JDK will be reset, this was also the question as I understand it.

To fix this for good add the following code to your pom file. Remember to do a Maven → Update project… afterwards or mvn clean compile at the command line.

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>

    </pluginManagement>
</build>

User · Answer

For imported maven project and JDK 1 7 do the following    Delete project from Eclipse  keep files  Delete  settings directory   project and  classpath files inside your project directory  Modify your pom xml file  add following properties  make sure following settings are not overridden by explicit maven-compiler-plugin definition in your POM    lt properties gt       lt maven compiler source gt 1 7 lt  maven compiler source gt       lt maven compiler target gt 1 7 lt  maven compiler target gt   lt  properties gt   Import updated project into Eclipse

User · Answer

In order to update your project to the latest version of java available in your environment  follow these steps    Open your pom xml file Switch your view to Effective POM tab Open Find Dialog  ctrl   F  to search for maven-compiler-plugin Copy the the following lines    x000D   x000D   lt plugin gt  x000D    lt artifactId gt maven-compiler-plugin lt  artifactId gt  x000D    lt version gt 3 1 lt  version gt  x000D   x000D   x000D     Click on pom xml tab to open your project pom configuration Inside your  lt build gt       lt  build gt  configuration section  paste the configuration copied and modify it as       x000D   x000D           lt plugins gt  x000D        lt plugin gt  x000D         lt artifactId gt maven-compiler-plugin lt  artifactId gt  x000D         lt version gt 3 1 lt  version gt  x000D       x000D         lt configuration gt  x000D          lt source gt 1 8 lt  source gt  x000D          lt target gt 1 8 lt  target gt  x000D         lt  configuration gt  x000D        lt  plugin gt  x000D       lt  plugins gt  x000D   x000D   x000D     save your configuration Right Click in your project Click on  Maven - gt  Update Project  and Click on OK in the displayed update dialog box    Done

User · Answer

I was facing the same issue  In pom xml I have specified maven compiler plugin to pick 1 7 as source and target  Even then when I would import the git project in eclipse it would pick 1 5 as compile version for the project  To be noted that the eclipse has installed runtime set to JDK 1 8  I also checked that none of the  classpath  impl or  project file is checked in git repository    Solution that worked for me  I simply deleted  classpath files and did a  maven-update project    classpath file was regenerated and it picked up 1 7 as compile version from pom file

User · Answer

I know this is an old topic  I had the same problem  I tested all the answers about this topic  And nothing worked here    but i found another solution   Go to pom- overview and add these to you properties    Name   maven compiler target   Value   1 7    and   Name   maven compiler source   Value   1 7    Now do a maven update

User · Answer

I tested all the answers about this topic  And nothing worked here    but I found another solution   Go to pom -  overview and add these to your properties   Name     maven compiler target    Value     1 8     and  Name     maven compiler source    Value     1 8     Now do a maven update

User · Answer

I m using Juno 4 2 with latest spring  maven plugin and JDK1 6 0 25    I faced same issue and here is my fix that make default after each Eclipse restart    List item Right-click on the maven project Java Build Path Libraries tab Select current wrong JRE item Click Edit Select the last option  Workspace default JRE  jdk1 6 0 25

User · Answer

Right-click on your project Click Properties Click the  Java Compiler  option on the left menu Under JDK compliance section on the right  change it to  1 7  Run a Maven clean and then Maven build

User · Answer

If you are getting following type of error    Then do the following steps--     Go to Windows  Then select Preferences  in Which select java on the left corner   In java select Installed JREs and check your JRE if you have correctly installed jdk and defined environment variables correct then you will see the current version of the installed java here as shown -     I have Java 8 installed  Check the check box if it is not checked  Click apply and close   Now Press Alt Enter to go into project properties or go via right clicking  on project and select Properties   In Properties select Java Build Path on left corner  Select Libraries    And click edit after selecting The JRE System Library     In edit Click and select Workspace default JRE  Then click Finish  In Order and Export Check the JRE System Library   Then Finally Apply and close Clean the project and then build it   Problem Solved  Cheers

User · Answer

I got an error in Eclipse Mars version as  Build path specifies execution environment J2SE-1 5  There are no JREs installed in the workspace that are strictly compatible with this environment   To resolve this issue  please do the following steps   Right click on Project Choose Build path Choose Configure Build path Choose Libraries tab Select JRE System Library and click on Edit button Choose workspace default JRE and Finish  Problem will be resolved

User · Answer

When creating a maven project in eclipse  the build path is set to JDK 1 5 regardless of settings  which is probably a bug in new project or m2e

[java] Maven "build path specifies execution environment J2SE-1.5", even though I changed it to 1.7

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