Question

39

How do I make java default to a manually installed JRE/JDK?

rated 0 times [ 39] [ 0] / answers: 1 / hits: 203781 / 3 Years ago, sat, june 26, 2021, 12:21:56

I have Ubuntu 12.04 amd64 installed on my machine, on the previous versions of Ubuntu it was deadly easy, now there is this command update-java-alternatives with a really bad man page.

I just have my JDK unpacked on a mounted partition like /media/mydisk/jdk, how i can force the use of that JDK instead of the one that comes in the Ubuntu repository?

What is the logic behind this update-java-alternatives ?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

aslity

Add To Favorites

Follow

Total Points: 336

Total Questions: 133

Total Answers: 98

Location: Zimbabwe

Member since Thu, Jul 21, 2022

2 Years ago

answered 3 Years ago huovie · Accepted Answer

Note: update-java-alternatives won't work with manual installations. In any case, it doesn't look like it has any special abilities which update-alternatives doesn't have, except convenience.

As a graphical alternative to @AnwarShah's command-line method, consider using Gnome Alternatives (sudo apt-get install galternatives):

Start GAlternatives, select each java option, change it to manual, and Add your alternative (the example here is the IBM JRE installed in my home directory):