18-接口和抽象类的综合案例

练习1

乒乓球运动员-类

package yundong;

public class pingpong extends athlete implements English{
    public pingpong() {
    }

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

    @Override
    public void word() {
        System.out.println(getName()+"学习乒乓球");
    }

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

篮球运动员-类

package yundong;

public class basketball extends athlete{
    public basketball() {
    }

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

    @Override
    public void word() {
        System.out.println(getName()+"学习蓝球");
    }
}

乒乓球教练-类

package yundong;

public class PingpongCoach extends athlete implements English{
    public PingpongCoach() {
    }

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

    @Override
    public void word() {
        System.out.println(getName()+"教乒乓球");
    }

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

蓝球教练-类

package yundong;

public class BasketballCoach extends athlete{
    public BasketballCoach() {
    }

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

    @Override
    public void word() {
        System.out.println(getName()+"教蓝球");
    }
}

英语-接口

package yundong;

public interface English {
    public abstract void english();
}

人-类

package yundong;

public abstract class athlete {
    private String name;
    private int age;

    public athlete() {
    }

    public athlete(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 word();


}

测试-类

package yundong;

public class Test {
    public static void main(String[] args) {
        basketball b = new basketball("篮球运动员",18);
        b.word();
        BasketballCoach B = new BasketballCoach("蓝球教练",88);
        B.word();
        pingpong p = new pingpong("乒乓球运动员",18);
        p.english();
        p.word();
        PingpongCoach P = new PingpongCoach("乒乓球教练",88);
        P.english();
        P.word();
    }
}