javaenv - simple tool for java environment control
usage: javaenv [options]
where options include:
    -h | --help			display this message
    --setjava			set java configuration
				(only for installation scripts!)
    --setnewjava NAME		choose new Java Runtime Environment
    --erasejava			erase current JAVA
    --erasejavaif NAME		erase current JAVA if it's name is NAME
    --listjava			display available JREs and JDKs
    --getjavahome		display your JAVA_HOME configuration
