Finally - Installed and configured Java 6 in Ubuntu

This took much longer than it should have, but I finally got the default JRE on my Ubuntu Linux partition on my laptop to be version 1.6. Here is how I did it:

1. Ran the command "sudo apt-get install sun-java6-bin sun-java6-fonts sun-java6-jre sun-java6-plugin" to install the necessary files on the system. apt-get is quickly becoming my best friend.

Now, normally, running the "java -version" command would specify what version of Java was identified as the default, but I consistently was receiving this:

The program 'java' can be found in the following packages:
* j2re1.4
* gij-4.1
* kaffe
* jamvm
* java-gcj-compat
* cacao
* sablevm
Try: apt-get install
Make sure you have the 'universe' component enabled
bash: java: command not found

Which was interesting since I just installed the JRE.

3. The missing piece was running the command "sudo update-alternatives --config java"

which produced this:

There are 2 alternatives which provide `java'.
Selection Alternative
-----------------------------------------------
1 /usr/bin/gij-wrapper-4.1
+ 2 /usr/lib/jvm/java-6-sun/jre/bin/java

Press enter to keep the default[*], or type selection number:

I selected 2 and then received the following:
Using `/usr/lib/jvm/java-6-sun/jre/bin/java' to provide `java'.

Now typing in "java -version" yields the expected results:

java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)

Yet another blog post my wife couldn't care less about.


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