30.Java基础_接口_抽象类_具体类实现案例

public interface SpeakEnglish {
    public abstract void speak();
}

public abstract class Person {
    private String name;
    private  int age;
    public Person(){}
    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public abstract void eat();
}

public abstract class Coach extends Person{
    public Coach() {
    }
    public Coach(String name, int age) {
        super(name, age);
    }
    public abstract void teach();
}

public abstract class Player extends Person{
    public Player() {
    }
    public Player(String name, int age) {
        super(name, age);
    }
    public abstract void study();
}

public class BasketballCoach extends Coach{
    public BasketballCoach() {
    }
    public BasketballCoach(String name, int age) {
        super(name, age);
    }
    @Override
    public void eat() {
        System.out.println("篮球教练吃炒饭!");
    }
    @Override
    public void teach() {
        System.out.println("篮球教练教运球和投篮!");
    }
}

public class BasketballPlayer extends Player{
    public BasketballPlayer() {
    }
    public BasketballPlayer(String name, int age) {
        super(name, age);
    }
    @Override
    public void eat() {
        System.out.println("篮球运动员吃炒年糕");
    }
    @Override
    public void study() {
        System.out.println("篮球运动员学习运球和投篮!");
    }
}

public class PingPangCoach extends Coach implements SpeakEnglish{
    public PingPangCoach() {
    }
    public PingPangCoach(String name, int age) {
        super(name, age);
    }
    @Override
    public void eat() {
        System.out.println("乒乓球教练吃炒面");
    }
    @Override
    public void teach() {
        System.out.println("乒乓球教练教发球和接球!");
    }
    @Override
    public void speak() {
        System.out.println("乒乓球教练说英语");
    }
}

public class PingPangPlayer extends Player implements SpeakEnglish{
    public PingPangPlayer() {
    }
    public PingPangPlayer(String name, int age) {
        super(name, age);
    }
    @Override
    public void eat() {
        System.out.println("乒乓球运动员吃炒粉丝");
    }
    @Override
    public void study() {
        System.out.println("乒乓球运动员学习发球和接球");
    }
    @Override
    public void speak() {
        System.out.println("乒乓球运动员说英语");
    }
}

//测试类
public class test {
    public static void main(String[] args) {
        //创建对象
        PingPangPlayer ppp=new PingPangPlayer("王浩",30);
        System.out.println(ppp.getName()+","+ppp.getAge());
        ppp.eat();
        ppp.study();
        ppp.speak();
        System.out.println("------------------");
        BasketballPlayer bp=new BasketballPlayer("姚明",40);
        System.out.println(bp.getName()+","+bp.getAge());
        bp.eat();
        bp.study();
    }
}