ForkedLauncher#run() uses a misconception of JAVA_HOME

The code does:

if ( envVars == null || envVars.get( "JAVA_HOME" ) == null )
{
    cmd.addEnvironment( "JAVA_HOME", System.getProperty( "java.home" ) );
} 

This is logically wrong because java.home is not JAVA_HOME. java.home points to the JRE directory which can or cannot be the JAVA_HOME. This block can be removed all together and shall be eiher inherited or provided by the client.