Ensure that you have the installed.
This can be downloaded from http://java.sun.com/j2se/.
You must ensure that you use at least version 1.5, as Jpgfdraw does not work with earlier versions.
Download one of the following files:
jpgfdraw-0.5.5b-uk.zip--English (UK)
jpgfdraw-0.5.5b-us.zip--English (US)
jpgfdraw-0.5.5b-zh.zip--Menu and dialog
items have been translated to Simplified Chinese by Wang Yong-Xian.
Documentation is in English.
Sorry, Jpgfdraw does not come with an installation script, you'll
have to do it the old fashioned way.