1回答

geelylucky

2020-07-11

已采纳

public abstract class ABattercake {

   private ABattercake aBattercake;

   public ABattercake() {}

   public ABattercake(ABattercake aBattercake) {
       this.aBattercake = aBattercake;
   }

   protected abstract String getDesc();

   protected abstract int cost();

   public ABattercake getaBattercake() {
       return this.aBattercake;
   }

   public void revoke() {
       if (this.aBattercake != null) {
           this.aBattercake = this.aBattercake.getaBattercake();
       }
   }
}

public class AbstractDecorator extends ABattercake {

   public AbstractDecorator(ABattercake aBattercake) {
       super(aBattercake);
   }

   @Override
   protected String getDesc() {
       return getaBattercake().getDesc();
   }

   @Override
   protected int cost() {
       return getaBattercake().cost();
   }
}

0

1

洪小才

非常感谢！谢谢老师不厌其烦的给我解答

2020-07-13

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