.class file opens instead of .java while debugging

Question

Current setup:

• MainProject which is a Library Project

• BranchProject which is a new projects and has MainPr

Answer 1

The problem is that the class file is preferred over the java (by default), here is how you can change that for Eclipse (tested on NEON 2):

1. Right-click on the Project in the Project-Explorer, click Properties
2. On the new window select: Run/Debug Settings
3. Create a new configuration (or duplicate another one)
4. Select the new config and click Edit...
5. Go to the tab Source
6. Select the Default and Remove
7. Create a new path with Add..., select Java Library, then JRE System Library
8. Create a new path with Add..., select the location where the sourcecode is by Workspace folder (if it is a project in the same workspace) or File System directory (it it is not)