java - Attach the Source in Eclipse of a jar

Question

I added a Student.jar into my Build Path in my eclipse like this-

Right click on the project->BuildPath->Configure Build Path->Libraries->Add External Jars

There is one class named StudentTest in Student.jar file. When I was debugging my code in eclipse, I stepped into that StudentTest class in the Student.jar.

And after that eclipse shows me like this-

The JAR file S:some_locationStudent.jar has no source attachment. You can attach the source by clicking Attach Source below

Now I am not sure how should I attach the source in my eclipse. And from where? Can anyone provide me step by step what I need to do.

Update:- I tried unzipping the Student.jar and I got Student folder. And after that I tried pointing the source to Student folder But still I am not able to see the class properly so that I can debug it properly, it shows the same above behavior.

Answer 1

Use Java Source Attacher !

It does what eclipse should do - a right click context menu that says "Attach Java Source.

It automatically downloads the source for you and attaches it. I've only hit a couple libraries it doesn't know about and when that happens it lets you contribute the url back to the community so no one else will have a problem with that library.