[java] Java 6 Unsupported major.minor version 51.0

According to maven website, the last version to support Java 6 is 3.2.5, and 3.3 and up use Java 7. My hunch is that you're using Maven 3.3 or higher, and should either upgrade to Java 7 (and set proper source/target attributes in your pom) or downgrade maven.

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ERROR Source option 1.5 is no longer supported. Use 1.6 or later Java 6 Unsupported major.minor version 51.0 Maven Installation OSX Error Unsupported major.minor version 51.0 Unsupported major.minor version 52.0 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]] java.lang.UnsupportedClassVersionError java.lang.UnsupportedClassVersionError Unsupported major.minor version 51.0 How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version Exception in thread "main" java.lang.UnsupportedClassVersionError: a (Unsupported major.minor version 51.0)