[java] Specifying java version in maven - differences between properties and compiler plugin

None of the solutions above worked for me straight away. So I followed these steps:

  1. Add in pom.xml:
<properties>
    <maven.compiler.target>1.8</maven.compiler.target>
    <maven.compiler.source>1.8</maven.compiler.source>
</properties>
  1. Go to Project Properties > Java Build Path, then remove the JRE System Library pointing to JRE1.5.

  2. Force updated the project.

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