Updating .class file in jar

Question

I want to update a .class file in a jar with a new one. What is the easiest way to do it, especially in the Eclipse IDE?

Answer 1

High-level steps:

Setup the environment
Use JD-GUI to peek into the JAR file
Unpack the JAR file
Modify the .class file with a Java Bytecode Editor
Update the modified classes into existing JAR file
Verify it with JD-GUI

Refer below link for detailed steps and methods to do it,

https://www.talksinfo.com/how-to-edit-class-file-from-a-jar/