Eclipse - How to “Change package declaration to …” across an entire project

Question

I\'ve just imported a large amount of source code into Eclipse and basically the package name is no longer valid (the code has been moved folders). Is there a way to select

Answer 1

• ALT+SHIFT+R add underscore at end of package name, hit ENTER twice
• ALT+SHIFT+R delete the underscore, ENTER twice

Done if there are few packages.