1 package 装饰模式;
2
3 public interface IBread {
4
5 public void prepair();
6
7 public void kneadFlour();
8
9 public void steamed();
10
11 public void process();
12 }
1 package 装饰模式;
2
3 public class NormalBread implements IBread{
4
5 @Override
6 public void prepair() {
7
8 System.out.println("准备面粉,水以及发酵粉...");
9 }
10
11 @Override
12 public void kneadFlour() {
13
14 System.out.println("和面...");
15 }
16
17 @Override
18 public void steamed() {
19
20 System.out.println("蒸馒头...香喷喷的馒头出炉了");
21 }
22
23 @Override
24 public void process() {
25
26 prepair();
27 kneadFlour();
28 steamed();
29 }
30
31 }
1 package 装饰模式;
2
3 public abstract class AbstractBread implements IBread {
4
5 private final IBread bread;
6
7 public AbstractBread(IBread bread) {
8 super();
9 this.bread = bread;
10 }
11 @Override
12 public void prepair() {
13 this.bread.prepair();
14 }
15 @Override
16 public void kneadFlour() {
17 this.bread.kneadFlour();
18 }
19 @Override
20 public void steamed() {
21 this.bread.steamed();
22 }
23
24 @Override
25 public void process() {
26 prepair();
27 kneadFlour();
28 steamed();
29 }
30
31 }
1 package 装饰模式;
2
3 public class CornDecorator extends AbstractBread{
4
5 public CornDecorator(IBread bread) {
6
7 super(bread);
8 }
9
10 public void paint(){
11
12 System.out.println("添加柠檬黄的着色剂");
13 }
14 @Override
15 public void kneadFlour() {
16 //添加着色剂后和面
17 this.paint();
18 super.kneadFlour();
19 }
20
21
22 }
1 package 装饰模式;
2
3 public class SweetDecorator extends AbstractBread {
4
5 public SweetDecorator(IBread bread) {
6
7 super(bread);
8 }
9
10 public void paint(){
11
12 System.out.println("添加甜蜜素...");
13 }
14
15 @Override
16 public void kneadFlour() {
17 //添加甜蜜素后和面
18 this.paint();
19 super.kneadFlour();
20 }
21
22 }
1 package 装饰模式;
2
3 public class Client {
4
5 public static void main(String[] args) {
6
7 System.out.println("=======开始装饰馒头");
8 IBread normalBread = new NormalBread();
9 normalBread = new SweetDecorator(normalBread);
10 normalBread = new CornDecorator(normalBread);
11 normalBread.process();
12 System.out.println("=======装饰馒头结束");
13 }
14 }
1 =======开始装饰馒头 2 准备面粉,水以及发酵粉... 3 添加柠檬黄的着色剂 4 添加甜蜜素... 5 和面... 6 蒸馒头...香喷喷的馒头出炉了 7 =======装饰馒头结束
原文：https://www.cnblogs.com/zhangyidadada/p/10571076.html