| If you have a recent version of Maven and you wanna do a release or build a jar without running all the unit tests (which you should run alot but now and again you might wanna skip) you can set
 
	maven.test.skip=true 
e.g. 
	maven java:jar -Dmaven.test.skip=true 
The same thing can be done if ever you're offline and want to stop Maven trying to download jars 
	maven test -Dmaven.mode.online=false 
UpdateThanks to bob for spotting it. You can just use the -o or --offline option to work offline. 
	maven -o test4:52:53 PM
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