做出来了哈
父类
package com.demon;
public class Traffic {
public String name;
public String way;
public int num;
public void method(){
}
}子类
package com.demon;
public class Bus extends Traffic {
public String name="巴士";
public String way="陆地";
public int num=40;
public void method(){
System.out.println(name+"在"+way+"上行走，"+"可以载"+num+"个人");
}
}测试页面
package com.demon;
public class Initail {
public static void main(String[] args) {
Traffic plane=new Plane();
plane.method();
Traffic bus=new Bus();
bus.method();
Traffic boat=new Boat();
boat.method();
}
}
