Unable to drag and drop to Eclipse

Issue

I have been draging and dropping from Windows Explorer to Eclipse since I've started using it, and now find myself unable to do so. When I drag a .java file over my package, the mouse cursor stays a circle with a diagonal bar through it and dropping does nothing. I have tried to change my workspace, create a fresh new workspace, deleted eclipse and redownloaded it. It still doesn't work. Making Eclipse run as admin doesn't solve the issue either.

Solution

I figured out it was due to viewing the project in Project Explorer instead of Package Explorer.

Right click on a project > Show in > Package Explorer

You'll be able to drag-drop again at this point.

Answered By - Zaiat