Java第四次作业

1

public class Dog { private String name; private String color; private int age; public Dog(String name, String color, int age) {   this.name = name;   this.color = color;   this.age = age; } public void print() {   System.out.print("名字： " + this.name + " " + "颜色：" + this.color + " "     + "年龄：" + this.age); } public String getName() {   return name; } public void setName(String name) {   this.name = name; } public String getColor() {   return color; } public void setColor(String color) {   this.color = color; } public int getAge() {   return age; } public void setAge(int age) {   this.age = age; } }

2

public class User { private String name; private String password; private static int num; public User() {   num++; } public User(String name) {   this.name = name;   num++; } public User(String name, String password) {   this.name = name;   this.password = password;   num++; } public void print() {   System.out.print("用户个数：" + num + " ");   System.out.println("名字： " + name + " " + "口令：" + password + " "); } public String getName() {   return name; } public void setName(String name) {   this.name = name; } public String getPassword() {   return password; } public void setPassword(String password) {   this.password = password; } }