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how can open JAR file and editing some thing inside file class and create JAR file again ?
Posted 25-Mar-13 1:20am
sorany302
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Solution 1

1) Make changes to your java file and compile it to convert it into a class file.
2) Open a jar file using winzip or 7-zip.
3) Drag and drop your changed class in this opened JAR file to its proper location.This step will replace the old class file.
4) Save the Changes.
 
Please note this can be done for development environment and not recommended for production/UAT environment.
 
Cheers,
Sudhakar
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v3
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Solution 2

You can't, unless you have the source code, or you are expert at editing class files.
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