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/ReorgDestinationAction.java
private ReorgRefactoring fRefactoring;
	
		ContainerFilter(ReorgRefactoring refactoring) {
			Assert.isNotNull(refactoring);
			fRefactoring= refactoring;
		}
	
		public boolean select(Viewer viewer, Object parent, Object o) {
			if (fRefactoring.getElementsToReorg().contains(o))
				return false;
			return fRefactoring.canBeAncestor(o);
		}
	}
	
	
	private static class DestinationRenderer extends JavaElementLabelProvider {