So for a new job, they are using software which is not compatible with Java 7. I need Java 6.x (because their software won't function in 7). Is there an OS (other than windows) which is also open source) that uses Java? I know android uses a Java like C++ script but I specifically need this 6.x Java. Worst case, I can roll back the JAVA in my Windows XP VM so I can keep Java 7.x for Windows 7.
Thoughts?