JAVA 开发实战经典 第二版 第五章 练习题 第 P157 T5

package com.bjpowernode;

class User {
    private String name;
    private String password;
    private static int number;

    public User() {
        number++;
    }

    public User(String name) {
        this.setName(name);
        number++;
    }

    public User(String password, String name) {
        this.setPassword(password);
        this.setName(name);
        number++;
    }

    public void tell() {
        System.out.println("用户名：" + getName() + "，口令：" + getPassword()+",用户的个数：" + number);
    }

    public void setName(String n) {
        name = n;
    }

    public void setPassword(String P) {
        password = P;
    }

    public String getName() {
        return name;
    }

    public String getPassword() {
        return password;
    }
}
public class MyTest {
    public static void main(String args[]) {
        User user1 = new User("老朱", "123");
        user1.tell();
        User user2 = new User("新阳", "456");
        user2.tell();
        User user3 = new User("猪心央", "789");
        user3.tell();

    }
}

用户名：123，口令：老朱,用户的个数：1
用户名：456，口令：新阳,用户的个数：2
用户名：789，口令：猪心央,用户的个数：3

Process finished with exit code 0