View sources of used Java classes in IntelliJ Idea

Question

In visual studio development environment when you use a library if you have the related pdb you can dig into their sources during debug. I wonder is there any way to have this f

Answer 1

Go to ➙ Implementation(s)

No one suggested the simple route with a context-menu:

1. import java.util.DesiredClass
2. select this import statement
3. right click -> Go to -> Implementation(s)

Done! The source code of the DesiredClass opens in a new tab.

This also works with selected class name in the body of your code.