Editing Java class file [closed]

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One does not simply edit a .class file. Consider them to be completely final. If you want to change something about how it runs later, save a separate file with your changes that this class then reads and acts upon.

https://www.javatpoint.com/java-bufferedreader-class

If this was just a test to try to modify someone else’s finished project, you want to use a decompiler first. I would suggest the built in decompiler in intellij since it is easy to use.

https://www.jetbrains.com/idea/

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