Probably a FAQ... but, here goes.... I've noticed that the JDK 1.1 description claims that it can co-exist with the older JDK 1.0. However, I've not been able to figure out how to make this work. Whichever one gets installed last seems to change the /etc/alternatives to it's liking and that's what you end up using.
I've tried changing the links in /etc/alternatives, but it just turns into a big mess. Aren't there any handy little scripts to switch back and forth? For example, on my Windows machine, I have batch files called "JDK10", "JDK11", and "JDK12" that switch between 1.0, 1.1, and 1.2 respectively. * Is there anything like that in Debian? * Are they separate for jdk and jdk-dev? * Is is possible for each user on the system (via environment vars, I'd guess) to pick which they want to use? Thanks in advance - Joe