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/ReorgAction.java
public ReorgAction(String name, StructuredSelectionProvider p) {
		super(name, p);
	}
	
	public ReorgAction(String name, ISelectionProvider p) {
		super(name, p);