ssd3 exam1

import java.io.*; import java.util.*; /** * Add cars to an electronic parking lot. * * @author Michael * @version 1.0.0 */ public class ParkingLotApplication { private static BufferedReader stdIn = new BufferedReader( new InputStreamReader(System.in)); private static PrintWriter stdOut = new PrintWriter(System.out, true); private static PrintWriter stdErr = new PrintWriter(System.err, true); private ParkingLot parkingLot; private static final int MIN_NUMBER = 0; private static final int MAX_NUMBER = 50; private static final double MIN_COST = 2.0; private static final double MAX_COST = 50.0; /** * construct an instance of a ParkingLotApplication * * @param args * not used * @throws IOException * if error reading from standard input */ public static void main(String[] args) throws IOException { ParkingLotApplication application = new ParkingLotApplication(); application.run(); } private void run() throws IOException { parkingLot = new ParkingLot(); int choice = getChoice(); while (choice != 0) { if (choice == 1) { parkingLot.addCar(readCar()); } else if (choice == 2) { stdOut.println(parkingLot.toString()); } else if (choice == 3) { stdOut.println("Total Cost: " + parkingLot.getTotalCost()); } choice = getChoice(); } } private int getChoice() throws IOException { do { int input; try { stdErr.println(); stdErr.print("[0] Quit\n" + "[1] Add Car\n" + "[2] Display cars\n" + "[3] Display total cost\n" + "choice>"); stdErr.flush(); input = Integer.parseInt(stdIn.readLine()); if (0 <= input && 3 >= input) { return input; } else { stdErr.println("Invalid choice: " + input); } } catch (NumberFormatException nfe) { stdErr.println(nfe); } } while (true); } private Car readCar() throws IOException { /* PLACE YOUR CODE HERE */ String owner = ""; String brand = ""; int number = 0; double cost = 0.0; do { try { stdErr.print("Car [onwer_plate_no_cost]>"); stdErr.flush(); StringTokenizer st = new StringTokenizer(stdIn.readLine(), "_"); if (st.countTokens() != 4) { stdErr.println("Invalid input line"); continue; } else { owner = st.nextToken(); brand = st.nextToken(); number = Integer.parseInt(st.nextToken()); cost = Double.parseDouble(st.nextToken()); if ((number <= 0) || (cost <= 0)) { stdErr.println("Number is out-of-range"); continue; } } } catch (NumberFormatException nfe) { stdErr.println(nfe); } return new Car(owner, brand, number, cost); } while (true); } }