该结构图的设计模式是 1 模式? public class Client { public static void main(String args []) { try { TV tv ; TVFactory factory; factory=new Haier TVFactory( ) ; tv=factory. 2 ; tv.play (); } catch(Exception e) { System.out.println ( e.getMessage ()); } } } public interface TVFactory { public TV produceTV ();} public class HaierTVFactory implements TVFactory { public TV produceTV () { System.out.println (" 海尔电视机工厂生产海尔电视机。 "); return 3 ; } }