Solve Netbeans src folder missing problem

Recently we updated from Netbeans 8.0.2 to 8.2. One of my colleagues could not see the src folder in Netbeans. What you need to do is to right click on project, open properties, go to Sources, under Source Package Folders, add the src and test folders there.

Important Netbeans folders on Windows:

• user/AppData/Local/Netbeans/Cache: Sometimes Netbeans shows error icons on files event tough there is no error. Delete the cache folder.
• user/AppData/Roaming/Netbeans