使用List容器是否可以降低一些类与类之间的耦合，增加可扩展性
//程序入口
package dada;
import java.util.ArrayList;
import java.util.Scanner;
public class Test {
static int price;
static int weight;
static int numberOfPeople;
public ArrayList<Car> listCars = new ArrayList<Car>();
public void add(Car car){
listCars.add(car);
}
public void list(){
for(Car car : listCars){ //输出车属性
car.out();
}
}
public void out(int number) {
ArrayList<String> nameGoodsList = new ArrayList<String>();
ArrayList<String> namePeopleList = new ArrayList<String>();
Scanner in = new Scanner(System.in);
for (int i = 0; i < number; i++) {
System.out.println("请输入第"+(i+1)+"辆车的序号：");
int num = in.nextInt();
Car c1 = (Car)listCars.get(num-1);
Test.price += c1.getMoney();
if(c1 instanceof People){
namePeopleList.add(c1.getName());
Test.numberOfPeople += ((People) c1).getPeople();
}else if(c1 instanceof Goods){
nameGoodsList.add(c1.getName());
Test.weight += ((Goods) c1).getGoods();
}else{
namePeopleList.add(c1.getName());
nameGoodsList.add(c1.getName());
Test.numberOfPeople += ((Pickup) c1).getPeople();
Test.weight += ((Pickup) c1).getGoods();
}
}
System.out.println("请输入租车天数：");
int day = in.nextInt();
Test.price = price * day;
System.out.println("您的账单：\n***可载人的车有：");
for (int i=0; i<namePeopleList.size(); i++) {
System.out.print(namePeopleList.get(i)+"\t");
}
System.out.println("共载人："+numberOfPeople+"人");
System.out.println("***载货的车有：");
for(int i=0; i<nameGoodsList.size(); i++){
System.out.print(nameGoodsList.get(i)+"\t");
}
System.out.println("共载货："+weight+"吨");
System.out.println("***租车总价格："+ price+"\n");
price = weight = numberOfPeople = 0;
in.close();
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int choose=0;
Test outList = new Test();
outList.add(new People(1, "奥迪A4 ", 500, 4 ));
outList.add(new People(2, "马自达6", 400, 4));
outList.add(new Pickup(3, "皮卡雪6", 450, 4, 2));
outList.add(new People(4, "金龙", 800, 20));
outList.add(new Goods(5, "松花江", 400, 4));
outList.add(new Goods(6, "依维柯", 1000, 20));
while(true){
System.out.println("欢迎使用答答租车系统：");
System.out.println("您是否要租车：1是 0否");
while ((choose=in.nextInt())==1) {
System.out.println("您可租车的类型及价目表：\n序号\t汽车名称\t租金（元/天）\t容量");
outList.list();
System.out.println("请输入您要租车的数量：");
int num = in.nextInt();
outList.out(num);
System.out.println("您是否要租车：1是 0否");
}
in.close();
if(choose==0)
System.out.println("感谢您的使用，再见！");
else
System.out.println("输入错误，请重新输入！");
}
}
}//父类
package dada;
public class Car {
private int number;
private String name;
private int money;
public Car(int number, String name, int money) {
this.money = money;
this.name = name;
this.number = number;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getMoney() {
return money;
}
public void setMoney(int money) {
this.money = money;
}
public void out(){
System.out.print(number+"\t"+name+"\t"+money+"（元/天）\t");
}
public void nameOut(){
System.out.print(name);
}
}
//载人接口
package dada;
public interface IPeople {
public int getPeople();
public void setPeople(int people);
}
//载货接口
package dada;
public interface IGoods {
public int getGoods();
public void setGoods(int Goods);
}
//客车类
package dada;
public class People extends Car implements IPeople{
private int people;
public People(int number, String name, int money, int people) {
super(number, name, money);
this.people = people;
}
@Override
public int getPeople() {
return people;
}
@Override
public void setPeople(int people) {
this.people = people;
}
public void out() {
super.out();
System.out.println("载人："+people+"人");
}
}
//货车类
package dada;
public class Goods extends Car implements IGoods{
private int goods;
public Goods(int number, String name, int money, int goods) {
super(number, name, money);
this.goods = goods;
}
@Override
public int getGoods() {
return goods;
}
@Override
public void setGoods(int goods) {
this.goods = goods;
}
public void out() {
super.out();
System.out.println("载货："+goods+"吨");
}
}
//皮卡类
package dada;
public class Pickup extends Car implements IPeople, IGoods{
private int people;
private int goods;
public Pickup(int number, String name, int money, int people, int goods) {
super(number, name, money);
this.goods = goods;
this.people = people;
}
@Override
public int getPeople() {
return people;
}
@Override
public void setPeople(int people) {
this.people = people;
}
@Override
public int getGoods() {
return goods;
}
@Override
public void setGoods(int goods) {
this.goods = goods;
}
public void out() {
super.out();
System.out.println("载人："+people+"人\t"+"载货："+goods+"吨");
}
}
