May 2001
Intermediate to advanced
1088 pages
30h 13m
English
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Patching a Java Library
If you find yourself decompiling a Java class to fix a bug or insert some debugging statements, you might have to insert the class back into the original library. The obvious solution is to unpack the library, copy the class where it belongs, and then use JAR to recreate the library.
Occasionally, the new library doesn't work correctly. Sometimes the process of unpacking and repacking the JAR can lose some information—you might forget a directory, or you might need to force JAR to include the manifest file again. In these situations, it's better to use a ZIP program such as Info-ZIP or WinZIP to update the existing JAR file (after you make a backup copy of the original JAR file!). Because JAR files and ZIP files share ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.