Java Home not found | javac not found

This exception should not occur if JAVA_HOME environment variable is properly set,
But If even then ,it is coming ,Here is the work-around to get your code working:

Copy the the file"Tools.jar" present in C:\Program Files\Java\jdk1.5.0_04\lib folder to
C:\Program Files\Apache Software Foundation\Tomcat 5.0\server\lib folder.

This should make your code work!!!!