父類Vehicle代碼：

package com.imooc;

public class Vehicle {
?? ?public String way;
?? ?public int num;
?? ?public String name;
?? ?public static void getWay(){
?? ??? ?System.out.println("各交通工具的運(yùn)輸路徑分別是：");
?? ?}
?? ?public static void getNum(){
?? ??? ?System.out.println("各交通工具的承載人數(shù)分別是：");
?? ?}
}

子類car代碼：

package com.imooc;

public class Car extends Vehicle {
?? ?public int num=20;
}

測(cè)試類Initailv代碼：
package com.imooc;

public class Initailv {
?? ?public static void main(String[] args) {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?Vehicle car=new Vehicle();
?? ??? ?car.name="汽車";
?? ??? ?car.way="陸地";
?? ??? ?car.num=20;
?? ??? ?Vehicle ship=new Vehicle();
?? ??? ?ship.name="輪船";
?? ??? ?ship.way="海洋";
?? ??? ?ship.num=200;
?? ??? ?Vehicle plane=new Vehicle();
?? ??? ?plane.name="飛機(jī)";
?? ??? ?plane.way="空中";
?? ??? ?plane.num=500;
?? ??? ?Vehicle.getWay();
?? ??? ?System.out.println(car.name+"："+car.way);
?? ??? ?System.out.println(ship.name+"："+ship.way);
?? ??? ?System.out.println(plane.name+"："+plane.way);
?? ??? ?Vehicle.getNum();
?? ??? ?System.out.println(car.name+"："+car.num);
?? ??? ?System.out.println(ship.name+"："+ship.num);
?? ??? ?System.out.println(plane.name+"："+plane.num);
?? ?}
}