Problem changing Java version using alternatives

Question

I\'m not quite sure how I got into this mess, but for some reason I\'m not able to change the current version of Java using alternatives. I can run alternatives --config java a

Answer 1

The only way I was able to solve the problem was to start over again by removing /var/lib/alternatives/java and installing each JDK again. I did the same for javac and jar. After doing this, I was able to switch between versions without any issues.