1 public class Phone {
2
3 private String cpu;
4 private String screen;
5 private String memory;
6 private String mainboard;
7
8 //私有构造方法
9 private Phone(Builder builder) {
10 this.cpu = builder.cpu;
11 this.screen = builder.screen;
12 this.memory = builder.memory;
13 this.mainboard = builder.mainboard;
14 }
15
16 @Override
17 public String toString() {
18 return "Phone{" +
19 "cpu=‘" + cpu + ‘\‘‘ +
20 ", screen=‘" + screen + ‘\‘‘ +
21 ", memory=‘" + memory + ‘\‘‘ +
22 ", mainboard=‘" + mainboard + ‘\‘‘ +
23 ‘}‘;
24 }
25
26 public static final class Builder {
27 private String cpu;
28 private String screen;
29 private String memory;
30 private String mainboard;
31
32 public Builder cpu(String cpu) {
33 this.cpu = cpu;
34 return this;
35 }
36
37 public Builder screen(String screen) {
38 this.screen = screen;
39 return this;
40 }
41 public Builder memory(String memory) {
42 this.memory = memory;
43 return this;
44 }
45 public Builder mainboard(String mainboard) {
46 this.mainboard = mainboard;
47 return this;
48 }
49
50 //使用构建者创建Phone对象
51 public Phone build() {
52 return new Phone(this);
53 }
54 }
55 }
public class Client {
public static void main(String[] args) {
//创建手机对象 通过构建者对象获取手机对象
Phone phone = new Phone.Builder()
.cpu("intel")
.screen("三星屏幕")
.memory("金士顿内存条")
.mainboard("华硕主板")
.build();
System.out.println(phone);
}
}
原文：https://www.cnblogs.com/freecodewriter/p/14715573.html