How to force Eclipse m2e plugin to use jdk for a project

Question

I\'m using Maven with \'Eclipse Kepler JavaEE\'. I have something like this in \'maven-compiler-plugin\' :

    1.7

        

Answer 1

In Eclipse, open Window | Preferences | Java | Installed JREs, make sure there's a JDK (and not just a JRE) for Java 1.7, then go to the submenu Execution Environments and mark this JDK as compatible with JavaSE-1.7.

After that, Maven | Update Project should work as desired.

Answer 2

First MVN_HOME has to be setup and then the JDK as to browsed instead of JRE

Window--> Preferences--> Java-->Installed JREs

and select JDK (e.g. : jdk1.7 or jdk1.8)

the do mvn install it will work