IDE installation in Linux

I have installed the Arduino IDE and used it successfully in Windows. I attempted to install it on another computer running Linux Puppy 4.3.1. It installed successfully but when I tried to run it I received the following message:

# ./arduino
BusyBox v1.15.0.svn (2009-07-25 18:23:53 GMT-8) multi-call binary

Usage: dirname FILENAME

Strip non-directory suffix from FILENAME

./arduino: line 22: java: command not found
#

Can anyone advise me why this won't work? Thank you.

I'm guessing it's because you haven't got Java installed, or installed somewhere where it isn't supposed to be.