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/CopyAction.java
public CopyAction(StructuredSelectionProvider provider) {
		super(ReorgMessages.getString("copyAction.label"), provider); 
		setDescription(ReorgMessages.getString("copyAction.description")); 
	}
	
	public CopyAction(String name, StructuredSelectionProvider provider) {
		super(name, provider);
	}
	
	ReorgRefactoring createRefactoring(List elements){
		return new CopyRefactoring(elements);
	}
	
	String getActionName() {
		return ReorgMessages.getString("copyAction.name"); 
	}
	
	String getDestinationDialogMessage() {
		return ReorgMessages.getString("copyAction.destination.label"); 
	}
}