Java实现租车管理系统

package com.Test02;
 
public class carSysStart {
 public static void main(String[] args) {
 carConsole p=new carConsole();
 p.setP(100);
 p.getP().initBaseinfo();
 p.getInfo();
 }
}

package com.Test02;
import java.util.Scanner;
 
public class carConsole {
 private Scanner cin=new Scanner(System.in);
 private carFunction p;
 private boolean isBase=false;
 
 public static void Prompt(){ //声明静态方法，之后其他类调用也不用先new
 System.out.println("欢 迎 使 用自助车辆 管 理 系统");
 System.out.println("-------------------------------------");
 System.out.println("1. 新 增 车辆");
 System.out.println("2. 查 询 车辆");
 System.out.println("3. 删 除 车辆");
 System.out.println("4. 借 出 车辆");
 System.out.println("5. 归 还 车辆");
 System.out.println("6. 排   行");
 System.out.println("7. 退   出 ");
 System.out.print("--------------------------------------\n");
 }
 
 public void setP(int maxSize) {
 if(maxSize>0){
 this.p=new carFunction(maxSize);
 this.isBase=true;
 }
 else{
 System.out.println("对不起,您要申请的内存规模有误!");
 }
 }
 
 public carFunction getP(){
 return p;
 }
 
 public void getInfo(){
 if(isBase){
 Prompt();
 boolean isStart=true;
 while(isStart){
 System.out.println("请选择:");
 int choice=cin.nextInt();
 switch(choice){
 case 1:
  System.out.println("请输入新增车辆的名称:");
  p.car_Add(cin.next());
  break;
 case 2:
  p.car_book_Find();
  break;
 case 3:
  System.out.println("请输入要删除车辆的名字:");
  p.car_Delete(cin.next());
  break;
 case 4:
  System.out.println("请输入要借出的车辆名称:");
  String name=cin.next();
  System.out.println("请输入借出的日期:");
  String date=cin.next();
  p.car_lend(name, date);
  break;
 case 5:
  System.out.println("请输入要归还的车辆:");
  String name1=cin.next();
  System.out.println("请输入归还的日期:");
  String date1=cin.next();
  p.car_return(name1, date1);
  break;
 case 6:
  p.car_print_Rank();
  break;
 case 7:
  isStart=p.exit();
  System.out.println("借车系统退出成功!欢迎您下次继续使用本系统!");
  break;
 default:
  System.out.println("输入有误,请重新输入!");
  Prompt();
  break;
 }
 } 
 }
 else
 System.out.println("对不起，目前该系统的数据库程序员小哥还在拼命打造中！详情请联系工作人员...");
 }
}

package com.Test02;
 
public class carData_base {
 
 String[] name;
 String[] date;
 boolean[] isLoan;
 long[] loanSize;
 
 public carData_base(int maxSize) {
 this.name =new String[maxSize];
 this.date =new String[maxSize];
 this.isLoan =new boolean[maxSize];
 this.loanSize =new long[maxSize];
 }
 
}

package com.Test02;
import java.util.*;
//import java.text.ParseException;
import java.text.SimpleDateFormat;
 
public class carFunction {
 carData_base car;
 
 public carFunction(int m){
 car=new carData_base(m);
 }
 
 public void initBaseinfo(){
 car.name[0] = "陆巡";
 car.isLoan[0] = true;
 car.date[0] = "2017-7-1";
 car.loanSize[0] = 30;
 
 car.name[1] = "霸道";
 car.isLoan[1] = false;
 car.loanSize[1] = 30;
 
 car.name[2] = "汉兰达";
 car.isLoan[2] = false;
 car.loanSize[2] = 30;
 }
 
 public void returnMain(){
 Scanner cin =new Scanner(System.in);
 System.out.println("*********************");
 System.out.print("输入0返回：");
 if (cin.nextInt() == 0){
 carConsole.Prompt();
 } else {
 System.out.println("输入错误, 异常终止！");
 System.exit(0);
 }
 }
 
 /*
 * 汽车系统的功能类
 * 1.增加车辆信息
 * 2.删除车辆信息
 * 3.改动车辆信息(包括借出、归还)
 * 4.查询车辆信息
 * */
 public void car_Add(String name){
 for (int i = 0; i < car.name.length; i++) {
 if(car.name[i]==null){
 car.name[i]=name;
 car.date[i]=null;
 car.isLoan[i]=false;
 car.loanSize[i]=0;
 System.out.println("新增车辆"+"\""+name+"\""+"成功!");
 break;
 }
 }
 returnMain();
 }
 
 public void car_Delete(String name){
 
 //功能:删除目前在库中的所有名字与name相同的车辆信息
 //具体思路两个游标：i表示当前要操作(覆盖，查询)的下标,j表示之后可以往前移动的元素下标; 时间复杂度 ≈ O(n)
 
 boolean isYes=false,flag=false;
 for (int i = 0,j = 0; i < car.name.length; i++) {
 if(car.name[i]==null){
 break;
 }
 else if(isYes){
 if(car.isLoan[j] && name.equals(car.name[j])){
  System.out.println("\""+name+"\""+"处于借出状态，不能删除!正在查找其他符合要求的车辆...");
 }
 car.name[i]=null;
 car.date[i]=null;
 car.isLoan[i]=false;
 car.loanSize[i]=0;
 }
 else if(name.equals(car.name[i]) && !car.isLoan[i]){
 j=j==0?i+1:j+1;
 flag=true;
 while(j 查看---------->\n");
 System.out.println("序号\t状 态\t名称\t\t借出日期");
 for (int i = 0; i < car.name.length; i++) {
 if (car.name[i] == null) {
 break;
 } else if (car.isLoan[i] == true) {
 System.out.println((i + 1) + "\t已借出\t" + car.name[i] + "\t\t"
  + car.date[i]);
 } else if (car.isLoan[i] == false) {
 System.out.println((i + 1) + "\t可 借\t" + car.name[i]);
 }
 }
 returnMain();
 }
 
 public void car_print_Rank(){
 String[] Name=new String[car.name.length];
 long[] loanSize=new long[car.name.length];
 int i;
 
 for (i = 0; i < car.name.length; i++) { //copyArray
 if(car.name[i]==null){
 break;
 }
 else{
 Name[i]=car.name[i];
 loanSize[i]=car.loanSize[i];
 }
 }
 
 System.out.println("名次\t\t名称\t\t热度");
 for (int j = 0,flag; j < i; j++) { //选择排序+打印排行榜
 flag=j;
 for (int j2 = j+1; j2 < i; j2++) {
 if(loanSize[flag]