子类与继承：实验1

package Example;

public class People {
	double height,weight;
	People(){
		height=0;
		weight=0;
	}
	People(double height, double weight){
		this.height=height;
		this.weight=weight;
	}
	void speakHello(){
		System.out.println("yayayaya");
	}
	void averageHeight(){
		System.out.println("People averageheight:"+height);
	}
	void averageWeight(){
		System.out.println("People averageweight:"+weight);
	}
}

package Example;

public class ChinaPeople extends People{
	public ChinaPeople(){
		super();
	}
    public ChinaPeople(double height, double weight){
		super(height, weight);
	}
	public void speakHello(){
		System.out.println("你好");
	}
	public void averageHeight(){
		System.out.println("中国人的平均身高:"+height);
	}
	public void averageWeight(){
		System.out.println("中国人的平均体重:"+weight);
	}
	public void chinaGongfu(){
		System.out.println("坐如钟 ，站如松 ，睡如松");
	}
}

package Example;

public class AmericanPeople extends People{
	public  AmericanPeople(){
		super();
	}
	public	AmericanPeople(double height, double weight){
		super(height, weight);
	}
	public void speakHello(){
		System.out.println("How do you do?");
	}
	public void averageHeight(){
		System.out.println("Ameriacan's average height:"+height);
	}
	public void averageWeight(){
		System.out.println("Ameriacan's average weight:"+weight);
	}
	public void americanBoxing(){
		System.out.println("直拳，勾拳，组合拳");
	}
}

package Example;

public class BeijingPeople extends ChinaPeople{
	public BeijingPeople(){
		super();
	}
	public BeijingPeople(double height, double weight){
		super(height, weight);
	}
	public void speakHello(){
		System.out.println("你好");
	}
	public void averageHeight(){
		System.out.println("北京人的平均身高:"+height);
	}
	public void averageWeight(){
		System.out.println("北京人的平均体重:"+weight);
	}
	public void beijingOpera(){
		System.out.println("花脸，青衣，花旦和老生");
	}
}

import Example.*;

public class main_ {

	public static void main(String[] args) {
		ChinaPeople chinese=new ChinaPeople(168.18,65);
		AmericanPeople american=new AmericanPeople(176,75);
		BeijingPeople beijings=new BeijingPeople(172.5, 70);
		
		chinese.speakHello();
		american.speakHello();
		beijings.speakHello();
		chinese.averageHeight();
		american.averageHeight();
		beijings.averageHeight();
		chinese.averageWeight();
		american.averageWeight();
		beijings.averageWeight();
		chinese.chinaGongfu();
		american.americanBoxing();
		beijings.beijingOpera();
		beijings.chinaGongfu();
	}

}