Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
580 views
in Technique[技术] by (71.8m points)

How to modify a .java file in .jar file?

I have services.jar file and have few packages inside this jar file. I need to modify the code of one its java classes.

Example - services.jar

Packages inside services.jar - search , util

Classes inside search package - Filter.java - Need to edit this code and need to make a new jar file.

Please guide me.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You can do so if you have the code available with you that you want to modify. If yes, then you have to extract the jar either from command line or using any tool such as winrar. Here is the command to extract the jar from command line:

jar -xvf services.jar

Replace the modified or updated /class file in the extracted directory and recreate the jar using the following command from commandline:

jar -cvf services.jar

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

2.1m questions

2.1m answers

60 comments

57.0k users

...