毕业设计&课设-一个简单的Java控制台应用程序.zip

import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.*; import java.io.*; /** * This the main class used to get details from the user and display the menu driven options * This class acts as the businedd layer in our applications */ class ThriftyRentSystem{ //cars and vans are two collections used to store cars of type Cars and vans of type Vans respectively private Car cars[] = new Car[50]; private Van vans[] = new Van[50]; public static DateFormat format = new SimpleDateFormat("dd/MM/yyyy"); //Basic format expected from the User /** * This the method called from main method * this contains the menudriven interface to communicate with the user */ public void run() { while (true) { System.out.println("\n**** ThriftyRent SYSTEM MENU ****\n"); System.out.println("Add vehicle: 1"); System.out.println("Rent vehicle: 2"); System.out.println("Return vehicle: 3"); System.out.println("Vehicle Maintenance: 4"); System.out.println("Complete Maintenance: 5"); System.out.println("Display All Vehicles: 6"); System.out.println("Exit Program: 7"); System.out.println("Enter your choice:"); Scanner sc= new Scanner(System.in); int choice = Integer.parseInt(sc.nextLine()); switch (choice) { case 1: this.add(sc); //Method used to add either cars or vans break; case 2: this.rent(sc); //Method used to rent either cars or vans break; case 3: this.returnCar(sc); //Method used to return a car after being rented break; case 4: this.vehicleMaintenance(sc); //Method used to set either car or van to maintenance break; case 5: this.completeMaintenance(sc); //Method used to complete the maintenance break; case 6: this.getDetails(); //Method used to get the details of cars or vans if present break; case 7: sc.close(); //Closing the scanner if 7 is selected by the user return; } } } /** * Used to add either cars or vans to the list * @param //Scanner variable * @return adds either car or van if the details are correct */ private void add(Scanner scan) { int i=0; String vehicleID=""; int seats=0; String maintenanceDate=null; int perDayRent=0; System.out.print("Vehicle Type(Van or Car): "); String vehicleType = scan.nextLine(); while (!(vehicleType.equalsIgnoreCase("car") ||vehicleType.equalsIgnoreCase("van"))) { System.out.print("Please enter either van or car: "); vehicleType = scan.nextLine(); } System.out.print("Year: "); int year = Integer.parseInt(scan.nextLine()); while (year<0 || year >2019) { System.out.println("Please enter a valid year"); year=Integer.parseInt(scan.nextLine()); } System.out.print("Make: "); String make = scan.nextLine(); System.out.print("Model: "); String model = scan.nextLine(); if(vehicleType.equals("car")) { System.out.print("Vehicle ID: C_"); vehicleID = scan.nextLine(); vehicleID = "C_"+vehicleID; if(this.cars[0]!=null && vehicleID.contains("C_")) { for(i=0;this.cars[i]!=null;i++){ if ((this.cars[i].getVehicleId()).equals(vehicleID)) { System.out.println("ID Already used, Please add a new vehicle"); return; } } } System.out.print("Number of seats: "); seats = Integer.parseInt(scan.nextLine()); while ((seats != 4 && seats != 7)) { System.out.println("Please enter seats as either 4 or 7"); seats = Integer.parseInt(scan.nextLine()); } if(i<50){ Vehicle newVehicle= new Car(vehicleID,year,make,model,0,new VehicleType(seats)); this.cars[i]= (Car) newVehicle; System.out.println(newVehicle.toString()); } } if(vehicleType.equalsIgnoreCase("van")) { System.out.print("Vehicle ID: V_"); vehicleID = scan.nextLine(); vehicleID="V_"+vehicleID; if(this.vans[0]!=null && vehicleID.contains("V_")) { for(i=0;this.vans[i]!=null;i++){ if ((this.vans[i].getVehicleId()).equals(vehicleID)) { System.out.println("ID Already used, Please add a new vehicle"); return; } } } seats = 15; System.out.print("Last Maintenance (dd/mm/yyyy): "); maintenanceDate = scan.next(); format.setLenient(false); while(maintenanceDate.trim().length() != ((SimpleDateFormat) format).toPattern().length()) { System.out.println("Please enter a valid date in the format dd/mm/yyyy: "); maintenanceDate = scan.nextLine(); } String dateSplit[] = maintenanceDate.split("/"); DateTime Lastmain= new DateTime(Integer.parseInt(dateSplit[0]),Integer.parseInt(dateSplit[1]),Integer.parseInt(dateSplit[2])); if(i<50){ Vehicle newVehicle= new Van(vehicleID,year,make,model,0,new VehicleType(seats,Lastmain)); this.vans[i]= (Van) newVehicle; System.out.println(newVehicle.toString()); } } } /** * Used to rent either available car or available van * @param //Scanner variable * @return Rents a car or van if the details are correct */ private void rent(Scanner sc) { System.out.print("Vehicle id: "); String id = sc.nextLine(); String type=""; if(id.contains("C_") && this.cars[0]==null) { System.out.println("There are no cars currently at the moment."); return; } if(id.contains("V_") && this.vans[0]==null) { System.out.println("There are no vans currently at the moment."); return; } if(this.cars[0]!=null && id.contains("C_")) { boolean flag =false; for(int i=0;this.cars[i]!=null;i++){ if ((this.cars[i].getVehicleId()).equals(id)) { if(this.cars[i].vehicleStatus!=0) { System.out.println("The car with ID : "+id+" is already either rented or under maintenance, please choose another car."); return; } type="car"; flag=true; break; } } if(!flag) { System.out.println("ID is incorrect, please try again!"); return; } } if(this.vans[0]!=null && id.contains("V_")) { boolean flag =false; for(int i=0;this.vans[i]!=null;i++){ if ((this.vans[i].getVehicleId()).equals(id)) { if(this.vans[0].vehicleStatus!=0) { System.out.println("The van with ID : "+id+" is already either rented or under maintenance. \nPlease choose another van."); return; } type="van"; flag=true; break; } } if(!flag) { System.out.println("Id is incorrect, please try again!"); return; } } if(!(id.contains("V_") || id.contains("C_"))) { System.out.println("Please Enter a Valid ID either starting from 'V_' or 'C_'."); return; } System.out.print("Customer ID: "); String cusId = sc.next(); System.out.print("Rent date( dd/mm/yyyy): "); String date = sc.next(); format.setLenient(false); while(date.trim().length() != ((SimpleDateFormat) format).toPattern().length()) { System.out.println("Please enter a valid date in the format dd/mm/yyyy: "); date = sc.nextLine(); } String dates[] = date.split("/"); DateTime rentDate= new DateTime(Integer.parseInt(dates[0]),Integer.parseInt(dates[1]),Integer.parseInt(dates[2])); System.out.print("How many days?: "); int days= sc.nextInt(); if(type.equals("car")) { for(int i=0;this.cars[0]!=null;i++){ if ((this.cars[i].getVehicleId()).equals(id)) { if(this.cars[i].rent(cusId,rentDate,days)) break; else{ System.out.println("Vehicle "+id+" could not be rented."); return; }