Enterprise Java for Linux HOWTO 

Hello, World!

Congratulations, you have installed, set up an environment for, and tested the IBM Java Developer Kit on

Linux. 

More Information 

For more information on the IBM Java Developer Kit, see the IBM Java website at 

 http://www.ibm.com/java

. 

2.3 Kaffe

Background

Kaffe is a cleanroom, open source implmentation of a Java Virtual Machine and class libraries.  As of the time

of this writing, Kaffe "mostly complies with JDK 1.1, except for a few missing parts."  And "parts of it are

already JDK 1.2 (Java 2) compatible."  (From the Kaffe website.) 

Kaffe may have already been shipped with your Linux distribution because of its open source license. 

Download and Installation

Rather than downloading from Kaffe, I suggest you initially try the Kaffe that most likely came with your

Linux distribution. 

Alternatively, Kaffe can be obtained from 

 http://www.kaffe.org

. 

>From the Kaffe home page, select the current release.  At the time of this writing, the current release is 1.0.5.

The Kaffe version number has no relationship to JDK specification version numbers. 

Setting up Your Environment 

The environment variables to set up are: 

PATH 

CLASSPATH 

To confirm that your PATH is correctly set up, check which Java compiler and JVM will be used. 

which javac

which java

The CLASSPATH environment variable references all JARs and directories that you will need to compile

and run Java programs. 

Initially I suggest you add the following JARs to your CLASSPATH. JARs can be packaged in either .jar or

.zip files. 

For instance: 

export CLASSPATH=/usr/local/share/kaffe/Klasses.zip

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