編寫一個java程序，設計一個汽車類Vehicle，包含的屬性有車輪的個數wheels和車重weight。小汽車類Car是Vehicle的子類，包含的屬性有載人數loader。卡車類Truck是Car類的子類，其中包含的屬性有載重量payload。每個類都有構造方法和輸出相關數據的方法。

代碼如下：

（1）源代碼

public class Vehicle {

?????? int wheels;

?????? double weights;

?????? Vehicle(int wheels,double weights){??? //這是構造方法

????????????? this.wheels=wheels;

????????????? this.weights=weights;

?????? }

?????? void disMessage(){

????????????? System.out.println("這個車車輪個數是"+wheels+"重量是"+weights+"斤");

?????? }

?????? public static void main(String[] args){

????????????? Vehicle v=new Vehicle(8,10.00);

????????????? smallCar c=new smallCar(6);

????????????? Truck t=new Truck(10);

????????????? v.disMessage();

????????????? c.disM();

????????????? t.disM2();

????????????? t.disM3();

?????? }

}

class smallCar extends Vehicle{

?????? int loader;

?????? smallCar(int loader){

????????????? super(8,10.00);

????????????? this.loader=loader;

?????? }

?????? void disM(){

????????????? System.out.println("這個小汽車可載"+loader+"人");

?????? }

}

class Truck extends smallCar{

?????? int payload;

?????? Truck(int payload){

????????????? super(6);

????????????? this.payload=payload;

?????? }

?????? void disM2(){

????????????? System.out.println("這卡車載重為"+payload+"kg");

?????? }

?????? void disM3(){

????????????? System.out.println("這卡車有"+wheels+"個輪子"+"車重有"+weights+"斤"+"可載"+loader+"人"+"載重為"+payload+"斤");

?????? }

}

轉載于:https://www.cnblogs.com/yzsun/p/11070201.html

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