In Eclipse, how to copy an existing project to another project?

This question appears in Google search as top result for query “copy project in eclipse”.

To copy project in Eclipse:

1) right click on project in Package Explorer view;

2) choose Copy;

3) right click on free place in Package Explorer view;

4) choose Paste;

5) enter new name in the prompt window.

To answer actual question, the best way is to delete project B and after — copy project A as explained above and give it name B.