General Info

h1. Use alternative to switch JVM

Below is the list of installed JDK:

* JDK 5 Update 15 (*Default*)

* JDK 6 Update 21 

h2. Switch JVM (java)

*DO NOT select the @Selection 1@*

<pre>

[root@cwyrnd3-server ~]# /usr/sbin/alternatives --config java

There are 3 programs which provide 'java'.

  Selection    Command

-----------------------------------------------

*  1           /usr/lib/jvm/jre-1.4.2-gcj/bin/java

 + 2           /usr/java/jdk1.5.0_15/bin/java

   3           /usr/java/jdk1.6.0_21/bin/java

Enter to keep the current selection[+], or type selection number:

</pre>

h2. Switch JVM compiler (javac)

<pre>

[root@cwyrnd3-server ~]# /usr/sbin/alternatives --config javac

There are 2 programs which provide 'javac'.

  Selection    Command

-----------------------------------------------

*  1           /usr/java/jdk1.6.0_21/bin/javac

 + 2           /usr/java/jdk1.5.0_15/bin/javac

Enter to keep the current selection[+], or type selection number:

</pre>