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| package com.homework13;
public class Homework13 {
public static void main(String[] args) {
Teacher teacher1 = new Teacher("王芳", '女', 39, 10);
Student student1 = new Student("李明", '男', 19, 222333);
Person[] personArray = new Person[4];
personArray[0] = teacher1;
personArray[1] = student1;
personArray[2] = new Teacher("王", '男', 59, 10);
personArray[3] = new Student("李", '女', 19, 333222);
Tool tool = new Tool();
tool.sort(personArray);
for(Person person : personArray) {
System.out.println(person.toString());
tool.play(person);
}
}
}
class Tool {
public void sort(Person[] personArray) {
Person temp = null;
for (int i = 0; i < personArray.length - 1; i++) {
for (int j = 0; j < personArray.length - 1 - i; j++) {
if(personArray[j].getAge() < personArray[j + 1].getAge()) {
temp = personArray[j];
personArray[j] = personArray[j + 1];
personArray[j + 1] = temp;
}
}
}
}
public void play(Person person) {
if(person instanceof Teacher) {
Teacher teacher = (Teacher) person;
teacher.play();
} else if(person instanceof Student) {
Student student = (Student) person;
student.play();
} else {
System.out.println("Fail to play!!");
}
}
}
class Person {
private String name;
private char sex;
private int age;
public Person(String name, char sex, int age) {
this.name = name;
this.sex = sex;
this.age = age;
}
public String toString() {
return "姓名：" + this.name + "\n"
+ "年龄：" + this.age + "\n"
+ "性别：" + this.sex + "\n";
}
public void play() {
System.out.println("play");
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public char getSex() {
return this.sex;
}
}
class Teacher extends Person {
private int workAge;
Teacher(String name, char sex, int age, int workAge) {
super(name, sex, age);
this.workAge = workAge;
}
public String toString() {
return "老师的信息：\n" + super.toString() + "工龄： " + this.workAge;
}
public void play() {
System.out.println("teacher play");
}
public int getWorkAge() {
return workAge;
}
}
class Student extends Person {
private int id;
Student(String name, char sex, int age, int id) {
super(name, sex, age);
this.id = id;
}
public String toString() {
return "学生的信息：\n" + super.toString() + "学号： " + this.id;
}
public void play() {
System.out.println("student play");
}
public int getId() {
return id;
}
}
|
