第一次完成JAVA项目作业，花了近4个小时
弄懂了CMD下的运行和eclips下运行的不一样
父类CAR
package car_demo;
public class car {
// 车的属性
String Car_id; // 车牌号
String Car_nm; // 汽车名
String Car_kind; // 类别
int P_qty; // 最大载客数
double C_qty; // 最大载货量
double Price; // 日单价
void Set_Car_id(String V_Car_id){
this.Car_id = V_Car_id;
}
void Set_Car_nm(String V_Car_nm){
this.Car_nm = V_Car_nm;
}
void Set_Car_kind(String V_Car_kind){
this.Car_kind = V_Car_kind;
}
void Set_P_qty(int V_P_qty){
this.P_qty = V_P_qty;
}
void Set_C_qty(double V_C_qty){
this.C_qty = V_C_qty;
}
void Set_Price(double V_Price){
this.Price = V_Price;
}
String Get_Car_id(){
return Car_id ;
}
String Get_Car_nm(){
return Car_nm ;
}
String Get_Car_kind(){
return Car_kind ;
}
int Get_P_qty(){
return P_qty ;
}
double Get_C_qty(){
return C_qty;
}
double Get_Price(){
return Price ;
}
}子类
1、Car_Per载人
package car_demo;
public class Car_Per extends car {
// 载人车的属性
private String Car_id; // 车牌号
private String Car_nm; // 汽车名
private String Car_kind="1"; // 类别
private int P_qty; // 最大载客数
private double Price; // 日单价
public Car_Per(String Car_id,String Car_nm,int P_qty,double Price){
this.Car_id = Car_id;
this.Car_nm = Car_nm;
this.Car_kind ="1";
this.P_qty = P_qty;
this.Price = Price;
}
public void Set_Car_id(String V_Car_id){
this.Car_id = V_Car_id;
}
public void Set_Car_nm(String V_Car_nm){
this.Car_nm = V_Car_nm;
}
public void Set_Car_kind(String V_Car_kind){
this.Car_kind = V_Car_kind;
}
public void Set_P_qty(int V_P_qty){
this.P_qty = V_P_qty;
}
public void Set_C_qty(double V_C_qty){
this.C_qty = V_C_qty;
}
public void Set_Price(double V_Price){
this.Price = V_Price;
}
public String Get_Car_id(){
return Car_id ;
}
public String Get_Car_nm(){
return Car_nm ;
}
public String Get_Car_kind(){
return Car_kind ;
}
public int Get_P_qty(){
return P_qty ;
}
public double Get_C_qty(){
return C_qty;
}
public double Get_Price(){
return Price ;
}
}2、Car_G载货
package car_demo;
public class Car_G extends car {
// 载货车的属性
private String Car_id; // 车牌号
private String Car_nm; // 汽车名
private String Car_kind; // 类别
private int P_qty; // 最大载客数
private double Price; // 日单价
public Car_G(String Car_id,String Car_nm,int C_qty,double Price){
this.Car_id = Car_id;
this.Car_nm = Car_nm;
this.Car_kind ="2";
this.C_qty = C_qty;
this.Price = Price;
}
public void Set_Car_id(String V_Car_id){
this.Car_id = V_Car_id;
}
public void Set_Car_nm(String V_Car_nm){
this.Car_nm = V_Car_nm;
}
public void Set_Car_kind(String V_Car_kind){
this.Car_kind = V_Car_kind;
}
public void Set_P_qty(int V_P_qty){
this.P_qty = V_P_qty;
}
public void Set_C_qty(double V_C_qty){
this.C_qty = V_C_qty;
}
public void Set_Price(double V_Price){
this.Price = V_Price;
}
public String Get_Car_id(){
return Car_id ;
}
public String Get_Car_nm(){
return Car_nm ;
}
public String Get_Car_kind(){
return Car_kind ;
}
public int Get_P_qty(){
return P_qty ;
}
public double Get_C_qty(){
return C_qty;
}
public double Get_Price(){
return Price ;
}
}3、Car_T载人及货
package car_demo;
public class Car_T extends car {
// 载人、载货车的属性
private String Car_id; // 车牌号
private String Car_nm; // 汽车名
private String Car_kind="3"; // 类别
private int P_qty; // 最大载客数
private double C_qty; // 最大载货量
private double Price; // 日单价
public Car_T(String Car_id,String Car_nm,int P_qty,double C_qty,double Price){
this.Car_id = Car_id;
this.Car_nm = Car_nm;
this.Car_kind ="3";
this.P_qty = P_qty;
this.C_qty = C_qty;
this.Price = Price;
}
public void Set_Car_id(String V_Car_id){
this.Car_id = V_Car_id;
}
public void Set_Car_nm(String V_Car_nm){
this.Car_nm = V_Car_nm;
}
public void Set_Car_kind(String V_Car_kind){
this.Car_kind = V_Car_kind;
}
public void Set_P_qty(int V_P_qty){
this.P_qty = V_P_qty;
}
public void Set_C_qty(double V_C_qty){
this.C_qty = V_C_qty;
}
public void Set_Price(double V_Price){
this.Price = V_Price;
}
public String Get_Car_id(){
return Car_id ;
}
public String Get_Car_nm(){
return Car_nm ;
}
public String Get_Car_kind(){
return Car_kind ;
}
public int Get_P_qty(){
return P_qty ;
}
public double Get_C_qty(){
return C_qty;
}
public double Get_Price(){
return Price ;
}
}三、主程序
package car_demo;
import java.util.Scanner;
public class Car_Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
car[] cars={ new Car_Per("00001","JEEP自由光",5,1500),
new Car_Per("00002","富士康",5,600),
new Car_Per("00003","依维柯",18,2300),
new Car_Per("00004","金杯",36,5000),
new Car_G("10001","大解放",2800,800),
new Car_G("10002","后八轮",32000,5000),
new Car_T("20001","大皮卡",5,28000,2000),
new Car_T("20002","小皮卡",2,3200,1500)};
System.out.println("欢迎您使用答答租车系统");
System.out.println("您是否租车：1 是 0 否");
Scanner v_input = new Scanner(System.in);
int is = v_input.nextInt();
if(is==1){
System.out.println("您可租车的类型和日价格表如下：");
System.out.println("类别 车牌号 车名 最大载客数 最大载货量 日租金价格");
for(int i=0;i<cars.length;i++){
if(cars[i].Get_Car_kind()=="1"){
System.out.print(cars[i].Get_Car_kind()+"载人 ");
System.out.print(cars[i].Get_Car_id()+" ");
System.out.print(String.format("%1$-20s",cars[i].Get_Car_nm()));
System.out.print(cars[i].Get_P_qty()+" ");
System.out.println(cars[i].Get_Price());
}else if(cars[i].Get_Car_kind()=="2"){
System.out.print(cars[i].Get_Car_kind()+"载货 ");
System.out.print(cars[i].Get_Car_id()+" ");
System.out.print(String.format("%1$-20s",cars[i].Get_Car_nm()));
System.out.print(" "+cars[i].Get_C_qty()+" ");
System.out.println(cars[i].Get_Price());
}else if(cars[i].Get_Car_kind()=="3"){
System.out.print(cars[i].Get_Car_kind()+"载人及货 ");
System.out.print(cars[i].Get_Car_id()+" ");
System.out.print(String.format("%1$-20s",cars[i].Get_Car_nm()));
System.out.print(cars[i].Get_P_qty()+" ");
System.out.print(cars[i].Get_C_qty()+" ");
System.out.println(cars[i].Get_Price());
}
}
System.out.println("请输入您租车的数量：");
Scanner v_input2 = new Scanner(System.in);
int qty = v_input2.nextInt();
String[] car_re = new String[qty];
if(qty>0 && qty<=8){
for(int i=0;i<=qty-1;i++){
System.out.println("请输入第"+(i+1)+"辆车的号码：");
Scanner v_input3 =new Scanner(System.in);
String v_car = v_input3.next();
car_re[i] = v_car;
}
System.out.println("请输入您要租的天数：");
Scanner v_input3 = new Scanner(System.in);
int day = v_input3.nextInt();
System.out.println("您的账单如下：");
int max_p =0;
double max_g =0;
double amt =0;
System.out.println("类别 车牌号 车名 最大载客数 最大载货量 日租金价格");
for(int i=0;i<cars.length;i++){
for (int j=0;j<car_re.length;j++){
if(cars[i].Get_Car_id().equals(car_re[j])){
switch(cars[i].Get_Car_kind()){
case "1":
System.out.print(cars[i].Get_Car_kind()+"载人 ");
break;
case "2":
System.out.print(cars[i].Get_Car_kind()+"载货 ");
break;
default:
System.out.print(cars[i].Get_Car_kind()+"载人及货 ");
break;
}
System.out.print(cars[i].Get_Car_id()+" ");
System.out.print(String.format("%1$-20s",cars[i].Get_Car_nm()));
System.out.print(cars[i].Get_P_qty()+" ");
System.out.print(cars[i].Get_C_qty()+" ");
System.out.println(cars[i].Get_Price());
max_p = max_p+cars[i].Get_P_qty();
max_g = max_g+cars[i].Get_C_qty();
amt = amt+cars[i].Get_Price()*day;
}
}
}
System.out.println();
System.out.println();
System.out.print("总载人数："+max_p);
System.out.print(" 总载货重量："+max_g);
System.out.println(" 总金额："+amt);
}else{
System.out.println("您输入的租车数量不符合要求！");
}
}else {
System.out.println("感谢您使用答答租车系统！");
}
}
}
