Why Maven project is tied to J2SE-1.5 by default?

@axtavt is right, add source level configuration to your project. But do not configure maven-compiler-plugin, simply put this properties into pom.xml.

<properties> 
  <maven.compiler.source>1.7</maven.compiler.source> 
  <maven.compiler.target>1.7</maven.compiler.target> 
</properties>

After this refresh maven configuration in Eclipse.

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