When you first start the Maven project, this error happened.

Answer 1, Authority 100%

What would you have compiled, but Java 5 it does not support. Install in POM.xml Target Platform Movement:

& lt; properties & gt;
   & lt; maven.compiler.source & gt; 1.8 & lt; /maven.compiler.source>
   & lt; maven.compiler.target & gt; 1.8 & lt; /maven.compiler.target>
& lt; / Properties & gt;