Java 中国人、美国人、北京人

package package1;public class People {protected double weight;protected double height;public void speckHello(){System.out.println("yayaya");}public void averageHeight(){height=173;System.out.println("average height:"+height);}public void averggeWeight(){weight=70;System.out.println("average weight:"+weight);}}package package1;public class ChinaPeople extends People {public void speckHello(){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 averggeWeight(){weight=65;System.out.println("中国人的平均体重:"+weight+"千克");}public void chinaGongfu(){System.out.println("坐如钟，站如松，睡如弓！");}}package package1;public class AmericanPeople extends People{public void speckHello(){System.out.println("How do you do");}public void averageHeight(){height=176;System.out.println("American's average height:"+height+"cm");}public void averggeWeight(){weight=75;System.out.println("American's average weight:"+weight+"kg");}public void americanBoxing(){System.out.println("直拳，勾拳，组合拳！");}}package package1;public class BeijingPeople extends ChinaPeople{public void averageHeight(){height=172.5;System.out.println("北京人的平均身高:"+height+"厘米");}public void averggeWeight(){weight=70;System.out.println("北京人的平均体重:"+weight+"千克");}public void beijingOpera(){System.out.println("花脸，青衣，花旦和老生！");}}package package1;public class Test {public static void main(String[] args) {ChinaPeople chinapeople=new ChinaPeople();AmericanPeople americanpeople=new AmericanPeople();BeijingPeople beijingpeople=new BeijingPeople();chinapeople.speckHello();americanpeople.speckHello();beijingpeople.speckHello();chinapeople.averageHeight();americanpeople.averageHeight();beijingpeople.averageHeight();chinapeople.averggeWeight();americanpeople.averggeWeight();beijingpeople.averggeWeight();chinapeople.chinaGongfu();americanpeople.americanBoxing();beijingpeople.beijingOpera();beijingpeople.chinaGongfu();}}