第5章 继承与接口

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1、第5章继承与接口实验1继承2．模板代码Example.javaclassPeople{protecteddoubleweight,height;publicvoidspeakHello(){System.out.println("yayawawa");}publicvoidaverageHeight(){height=173;System.out.println("averageheight:"+height);}publicvoidaverageWeight(){weight=70;Syste

2、m.out.println("averageweight:"+weight);}}classChinaPeopleextendsPeople{publicvoidspeakHello(){System.out.println("你好，吃饭了吗？");}//重写publicvoidspeakHello()方法，要求输出类似“你好，吃饭了吗”//这样的汉语信息publicvoidaverageHeight(){height=168.78;System.out.println("中国人的平均身高："+

3、height+"厘米");}//重写publicvoidaverageHeight()方法，要求输出类似//“中国人的平均身高：168.78厘米”这样的汉语信息publicvoidaverageWeight(){weight=65;System.out.println("中国人的平均体重："+weight+"公斤");}//重写publicvoidaverageWeight()方法，要求输出类似//“中国人的平均体重：65公斤”这样的汉语信息publicvoidchinaGongfu(){Sys

4、tem.out.println("坐如钟，站如松，睡如弓");//输出中国武术的信息，如“坐如钟，站如松，睡如弓”等}}classAmericanPeopleextendsPeople{publicvoidspeakHello(){System.out.println("Howdoyoudo？");}//重写publicvoidspeakHello()方法，要求输出类似“Howdoyoudo”这样的英语信息publicvoidaverageHeight(){}//重写publicvoidaver

5、ageHeight()方法publicvoidaverageWeight(){}//重写publicvoidaverageWeight()方法publicvoidamericanBoxing(){System.out.println("直拳、钩拳");//输出拳击的信息，如“直拳”、“钩拳”等}}classBeijingPeopleextendsChinaPeople{publicvoidspeakHello(){System.out.println("您好？");}//重写publicvoid

6、speakHello()方法，要求输出类似“您好”这样的汉语信息publicvoidaverageHeight(){}//重写publicvoidaverageHeight()方法publicvoidaverageWeight(){}//重写publicvoidaverageWeight()方法publicvoidbeijingOpera(){System.out.println("京剧");//输出京剧的信息}}publicclassExample{publicstaticvoidmain(S

7、tringargs[]){ChinaPeoplechinaPeople=newChinaPeople();AmericanPeopleamericanPeople=newAmericanPeople();BeijingPeoplebeijingPeople=newBeijingPeople();chinaPeople.speakHello();americanPeople.speakHello();beijingPeople.speakHello();chinaPeople.averageHei

8、ght();americanPeople.averageHeight();beijingPeople.averageHeight();chinaPeople.averageWeight();americanPeople.averageWeight();beijingPeople.averageWeight();chinaPeople.chinaGongfu();americanPeople.americanBoxing();beijingPeople.beijingOpera();beijing