If you are unlucky like me and you are constrained to work under windows for your groovy / grails / Java development, you certainly miss tools like GVM
This is a poor man’s windows dev environment switcher, based on symbolic links and made for Windows 7 or higher. And yes, it’s a one line command line :)
You are even poorer? you use XP :) Don’t panic, if you don’t have mklink on your windows, check alternatives here Symbolic links on windows