Linux Ask!

Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.

Jun 112011

Changing the default Java environment in Ubuntu


If you have more than one JVM (Java Virtual Machine) installed in your Ubuntu server, e.g. OpenJDK and the Oracle JDK, you can easily select them using the following command:

# sudo update-alternatives --config java

Following the instruction and you can easily set them as you want.

Aug 042010

Install sun-java-jdk in Ubuntu 10.04


To install the offical Sun (now Oracle) JDK in Ubuntu 10.04, you need to do the following in terminal.

1. Add the extra repository

# sudo add-apt-repository "deb lucid partner"

2. Update the local package index

# sudo apt-get update

3. Install the JDK and plugin

# sudo apt-get install sun-java6-jdk sun-java6-plugin

4. And finally, change you system to use the newly installed JDK.

# sudo update-java-alternatives -s java-6-sun