JAVA实验——中国人与美国人

JAVA中继承与接口的使用之中国人与美国

People.java

package lab2;

public class People {

    protected double weight, height;

    public void speakHello() {
        System.out.println("yayayaya");
    }

    public void averageHeight() {
        height = 173;
        System.out.println("average height:" + height);
    }

    public void averageWeight() {
        weight = 70;
        System.out.println("average height:" + weight);
    }
}

ChinaPeople.java

package lab2;

public class ChinaPeople extends People {


    public void speakHello() {
        System.out.println("您好");
    }


    public void averageHeight() {
        height = 168.78;
        System.out.println("中国人的平均身高：" + height + "厘米");
    }

    public void averageWeight() {
        weight=65;
        System.out.println("中国人的平均体重："+weight+"公斤");
    }

    public void chinaGongfu() {
        System.out.println("坐如钟，站如松，睡如弓");
    }
}

AmericanPeople.java

package lab2;

public class AmericanPeople extends People {

    @Override
    public void speakHello() {
        System.out.println("How do you do");
    }

    @Override
    public void averageHeight() {
        height = 176;
        System.out.println("American's average height :"+height+"cm");
    }

    @Override
    public void averageWeight() {
        weight = 75;
        System.out.println("American's average weight" + weight + "kg");
    }

    public void americanBoxing() {
        System.out.println("直拳、勾拳、组合拳");
    }
}

BejingPeople.java

package lab2;

public class BejingPeople extends ChinaPeople {

    @Override
    public void averageHeight() {
        height = 172.5;
        System.out.println("北京人的平均身高：" + height + "厘米");
    }

    @Override
    public void averageWeight() {
        weight = 70;
        System.out.println("北京人的平均体重：" + weight + "公斤");
    }

    public void beijingOpera() {
        System.out.println("花脸、青衣、花旦和老生");
    }
}

Example.java

package lab2;

public class AmericanPeople extends People {

    @Override
    public void speakHello() {
        System.out.println("How do you do");
    }

    @Override
    public void averageHeight() {
        height = 176;
        System.out.println("American's average height :"+height+"cm");
    }

    @Override
    public void averageWeight() {
        weight = 75;
        System.out.println("American's average weight" + weight + "kg");
    }

    public void americanBoxing() {
        System.out.println("直拳、勾拳、组合拳");
    }
}