Install Java 1.4.2

To check: Run java -version on the command line

If not, download the J2SE SDK from:

• http://java.sun.com/j2se/1.4.2/download.html

• Mac OS X users will have Java 1.5 by default

Install it to /opt/java

Set environment variable: JAVA_HOME=/opt/java

• Mac users: JAVA_HOME=/Library/Java/Home

• Windows users: JAVA_HOME=C:\j2sdk1.4.2_xx (where "xx" is the minor version - for example "j2sdk1.4.2_11")

Add $JAVA_HOME/bin to PATH

Set environment variable for desktop: JAVA_OPTS

• More info on JVM tuning: Sakai 2.2 developer JVM tuning