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Define the default java compliance level for maven projects in eclipse

 4 years ago
source link: https://www.codesd.com/item/define-the-default-java-compliance-level-for-maven-projects-in-eclipse.html
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Define the default java compliance level for maven projects in eclipse

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The default compliance level for maven is 1.5 and every time that I update a maven project in eclipse it sets back the compliance level from 1.6 to 1.5 which is really annoying for me.

I know that I can set the target to 1.6 in pom file but the problem is that I cannot set this in the parent pom and expect the children to inherit it. So I have to do it for every single maven module. How can I set it in my maven project or in the whole eclipse once for a "lifetime" without modifying every single maven module!?

I know that I can set the target to 1.6 in pom file but the problem is that I cannot set this in the parent pom and expect the children to inherit it.

Setting the <source> and <target> version in the parent pom does work.

For example, in my parent pom, I have:

<pluginManagement>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
        <source>1.6</source>
        <target>1.6</target>
        <encoding>UTF-8</encoding>
      </configuration>
    </plugin>
  </plugins>
</pluginManagement>

If you are having problems, you might want to check that:

  • the child specifies the correct version of the parent;
  • the parent pom specifies both source and target values;
  • you have run mvn install on the parent; and
  • mvn help:effective-pom on the child project shows the expected source/target values.

After modifying the poms, you may need to select both projects and use Maven->Update Project.


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