In my java project, i have added some external jars. I want to update a particular jar with my java class file. Please help me how to do this.
Regards
Rajasekaran.G
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If the jar you want to add your class to is a 3r party library, I would recommend against doing what you described (it can lead to subtle surprises and unintended side effects).
If the jar you want to update is your own, I would mode the source for the class into the project that generates that jar and it should be added automatically during the generation of the jar.
If you really want to do it by hand, you can unjar the external jar, add your .class file to the resulting directory structure and jar it up again.