How to set default Maven's Java in Eclipse?

Question

If I create new Maven project in Eclipse and base it on quickstart archetype, it appears with J2SE-1.5 in Java Build Path window and 1.5 in Java Compiler / JDK Compliance window.

So, I usually have to change this to other Java manually.

Where are these default setting come from?

How to change to 1.6 or 1.7?

Nicolas · Answer 1 · 2013-09-30T14:47:12.833

8

The m2eclipse plugin uses the settings from the POM. So you need to add this to your POM:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.1</version>
  <configuration>
    <source>1.6</source>
    <target>1.6</target>
  </configuration>
</plugin>

edited Sep 30 '13 at 14:47

answered Sep 30 '13 at 14:35

Nicolas

370
3
10

1

The [maven-compiler-plugin](http://maven.apache.org/plugins/maven-compiler-plugin/) has the version 3.1 in the meantime. – khmarbaise Sep 30 '13 at 14:37
My mistake ;) ... Fixed! – Nicolas Sep 30 '13 at 14:47
Maven newbie here: I have put this in my pom.xml file, and chosen "update project" from the maven menu when I right click on the project, but nothing has changed. Is there something else I have to do to get eclipse to update the java version it's using for my project? – Jules May 12 '14 at 06:28

score 2 · Answer 2 · 2013-09-30T22:23:05.077

You should add plugin in your pom.xml like below :

 <build>
    <pluginManagement>
      <plugins>
         <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>your version</version>
        <executions>
          <execution>
            <id>default-testCompile</id>
            <phase>test-compile</phase>
            <goals>
              <goal>testCompile</goal>
            </goals>
          </execution>
          <execution>
            <id>default-compile</id>
            <phase>compile</phase>
            <goals>
              <goal>compile</goal>
            </goals>
          </execution>
        </executions>
         <configuration>
            <source>1.7</source>
            <target>1.7</target>
         </configuration>
      </plugin>
      </plugins>
    </pluginManagement>
  </build>

And then you can see your project marked with error.In this case, Right click your project directory->Maven->Update Project option will work

Only the configuration part is necessary. – khmarbaise Sep 30 '13 at 14:54 — khmarbaise, Sep 30 '13 at 14:54
Maven->Update Project was necessary for me. – kgiannakakis Aug 25 '15 at 08:18 — kgiannakakis, Aug 25 '15 at 08:18

score 1 · Answer 3 · edited May 23 '17 at 11:46

1

You will have to manually update the pom.xml with the following plugin because 1.5 is the default.

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
    <classpathContainers>
       <classpathContainer>
org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6
       </classpathContainer>
    </classpathContainers>
</configuration>
</plugin>

Refrences:

edited May 23 '17 at 11:46

Community

1
1

answered Sep 30 '13 at 14:39

Gurminder Singh

1,755
16
19

Only the configuration of the maven-compiler-plugin is needed. Apart from that it will set the launcher within Eclipse but not the compiler which is used by maven or to be more accurate which compatibility is used of the installed jdk. – khmarbaise Sep 30 '13 at 17:10

How to set default Maven's Java in Eclipse?

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