Crontab to run java program ?

[larva]

Hi,

I login as root and modify the /etc/crontab by executing 'crontab -e' command and add the following line to crontab :

0-59 16 * * * root /etc/local/j2sdk1.4.1/bin/java /home/FileOutput

where FileOutput is a java program in .class. If I run manually by typing 'java FileOutput', a file will be generated in he same directory.
I always receive email saying that NoClassFound. Please help !

regards,
Larva

 

[manly]

Go read up on CLASSPATH (should be covered in the Java Tutorial).

You never give a literal file path to the JVM to specify the main class. In an example like this, I would write a small wrapper shell script to call your Java program. In fact, most Java programs are called by shell scripts since starting them manually is somewhat painful (compared to clicking on an .exe for example).