JVM version manager

Question

Is there Ruby Version Manager equivalent for the Java world?

I\'m looking for tool which allow me to easily download and install a new JVMs and switch between them. For

Answer 1

If you use Ubuntu you can specify which JVM you want to use via command (works only for JVM installed from apt-get or aptitude)

sudo update-alternatives --config java

Or by setting JAVA_HOME. Here is good tutorial:

http://vietpad.sourceforge.net/javaonlinux.html