People.java
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 weight:"+weight);
}
}
ChinaPeople.java
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(){
System.out.println("中国人的平均体重：65公斤");
}
public void chinaGongfu(){
System.out.println("坐如钟，站如松，睡如弓");
}
}
AmericanPeople.java
public class AmericanPeople extends People{
public void speakHello(){
System.out.println("How do you do");
}
public void averageHeight(){
System.out.println("American's average height:176cm");
}
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");
}
}
BeijingPeople.java
public class BeijingPeople extends ChinaPeople{
public void averageHeight(){
System.out.println("北京人的平均身高：172.5厘米");
}
public void averageWeight(){
System.out.println("北京人的平均体重：70公斤");
}
public void beijingOpera(){
System.out.println("花脸、青衣、花旦和老生");
}
}
Example.java
public class Example {
public static void main(String[] args) {
ChinaPeople chinaPeople=new ChinaPeople();
AmericanPeople americanPeople=new AmericanPeople();
BeijingPeople beijingPeople=new BeijingPeople();
chinaPeople.speakHello();
beijingPeople.speakHello();
chinaPeople.averageHeight();
americanPeople.averageHeight();
beijingPeople.averageHeight();
chinaPeople.averageWeight();
americanPeople.averageWeight();
beijingPeople.averageWeight();
chinaPeople.chinaGongfu();
americanPeople.americanBoxing();
beijingPeople.beijingOpera();
beijingPeople.chinaGongfu();
}
}
