看看我的。指教一下啊
package likun.yi;public class Vehicle { public void payload() { System.out.println("载客"); }} |
| 1 | package likun.yi;public class Bus extends Vehicle { public void payload() { System.out.println("载客40人"); }} |
| 1 | package likun.yi;public class Ship extends Vehicle { public void payload() { System.out.println("载客150人"); }} |
| 1 | package likun.yi;public class Plane extends Vehicle { public void payload() { System.out.println("载客300人"); }} |
| 1 | package likun.yi;public class Init { public static void main(String[] args) { // TODO Auto-generated method stub Vehicle bus = new Bus(); bus.payload(); Vehicle ship = new Ship(); ship.payload(); Vehicle plane = new Plane(); plane.payload(); }} |
载客40人
载客150人
载客300人
