JavaSE-11.4【综合案例-多态&抽象类&接口】

 

 

 

 

 

 

package day2.yubaby04;

/*
4 综合案例-多态&抽象类&接口
 */

public class PersonDemo {

    public static void main(String[] args) {
        PingpangPlayer ppp = new PingpangPlayer();
        ppp.setName("java");
        ppp.setAge(23);
        System.out.println(ppp.getName() + "," + ppp.getAge());
        ppp.eat();
        ppp.study();
        ppp.speak();

        PingpangCoach ppc = new PingpangCoach("avaj", 44);
        System.out.println(ppc.getName() + "," + ppc.getAge());
        ppc.eat();
        ppc.teach();
        ppc.speak();

        BaketballPlayer bbp = new BaketballPlayer("C++", 30);
        System.out.println(bbp.getName() + "," + bbp.getAge());
        bbp.eat();
        bbp.study();

        BaketballCoach bbc = new BaketballCoach();
        bbc.setName("++C");
        bbc.setAge(50);
        System.out.println(bbc.getName() + "," + bbc.getAge());
        bbc.eat();
        bbc.teach();
    }

}

　　

package day2.yubaby04;

public interface SpeakEnglish {

//    public abstract void speak();
    void speak();

}

　　

package day2.yubaby04;

//抽象人类
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 void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public abstract void eat();
}

　　

package day2.yubaby04;

//抽象运动员类
public abstract class Player extends Person{

    public Player() {
    }

    public Player(String name, int age) {
        super(name, age);
    }

    public abstract void study();
}

　　

package day2.yubaby04;

//抽象教练类
public abstract class Coach extends Person{

    public Coach() {
    }

    public Coach(String name, int age) {
        super(name, age);
    }

    public abstract void teach();
}

　　

package day2.yubaby04;

public class BaketballCoach extends Coach{

    public BaketballCoach() {
    }

    public BaketballCoach(String name, int age) {
        super(name, age);
    }

    @Override
    public void teach() {
        System.out.println("篮球教练教打篮球");
    }

    @Override
    public void eat() {
        System.out.println("篮球教练吃篮球吗");
    }
}

　　

package day2.yubaby04;

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("乒乓球教练教打乒乓球");
    }

    @Override
    public void teach() {
        System.out.println("乒乓球教练吃乒乓球吗");
    }

    @Override
    public void speak() {
        System.out.println("乒乓球教练说英语");
    }
}

　　

package day2.yubaby04;

public class BaketballPlayer extends Player{

    public BaketballPlayer() {
    }

    public BaketballPlayer(String name, int age) {
        super(name, age);
    }

    @Override
    public void eat() {
        System.out.println("篮球运动员吃乒乓球吗");
    }

    @Override
    public void study() {
        System.out.println("篮球运动员学习打篮球");
    }


}

　　

package day2.yubaby04;

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("乒乓球运动员吃篮球吗");
    }

    @Override
    public void study() {
        System.out.println("乒乓球运动员学习打乒乓球");
    }


    @Override
    public void speak() {
        System.out.println("乒乓球运动员说英语");
    }
}