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; } }