通过静态内部类等方式实现的零件无序话构造
代码
1.User
public class User {
private String name;
private int age;
private String address;
public String getName() {
return name;
}
public int getAge() {
return age;
}
public String getAddress() {
return address;
}
public static class Builder{
private User user=new User();
public Builder setName(String name) {
user.name=name;
return this;
}
public Builder setAge(int age) {
user.age=age;
return this;
}
public Builder setAddress(String address) {
user.address=address;
return this;
}
public User build() {
return user;
}
}
}
2.测试
public class Test {
public static void main(String[] args) {
User user=new User.Builder().setName("zhangsan").setAge(18).setAddress("破咯街").build();
System.out.println(user.getName());
}
}
3.测试结果
zhangsan
4.结论
理解简单,代码冗长。