Modifying a jar file

Question

I have a jar file which is used in html file as applet. I want to modify the content of the jar file and to rebuild the jar file so that the html will work fine with the new

Answer 1

Disclaimer: When reverse engineering any code be sure that you are staying within the limits of the law and adhering to the license of that code.

Follow the instructions above to unpack the JAR.

Find the original source of the JAR (perhaps its on SourceForge) and download the source, modify the source, and rebuild your own JAR.

You can also decompile the class files in the JAR. This is a rather advanced process and has a lot of "gotchas".