Bug 7914 Cannot copy a Java project in the packages view
There is no way to copy a Java project in the packages view. You can copy a project in the Navigator. This is a functional gap.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/reorg/JdtDeleteResourceAction.java
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */