How to add class files and folders to a jar file from a directory in Java

Question

Hello people of stackoverflow :)

Today i have come across a problem which i need some help fixing.

I want to get the contents of a folder from my computer then add that contents into a jar file replacing any existing files already in that jar file. I am attempting to do this from within a java program.

I already wrote a method that will extract the contents of the jar file but i came up that this will be a faster and much more efficient method for what i have to do.

Any help with this would be greatly appreciated.

Answer 1

您是否尝试过研究文档http://docs.oracle.com/javase/tutorial/deployment/jar/update.html ？

Answer 2

如果要从Java应用程序执行此操作，可以考虑Runtime.getRuntime().exec("your command")