title: Do while Loop to show a menu
body: <p>I have created my menu with do~while(true); but every time the user insert a number, instead of running the program it shows the the menu again! what do you think?</p>
  
  <p>// my main method</p>
  
  <pre><code>public static void main(String[] args) {
  
      DataReader reader = new DataReader(); // The reader is used to read data from a file
  
      // Load data from the file
      if(reader.loadData(args[0])) {          // The filename is entered using a command-line argument
  
          vehicles= reader.getVehicleData(); // Store the arrays of Vehicle
  
          // Display how many shapes were read from the file
          System.out.println("Successfully loaded " + vehicles[0].getCount() + 
                             " vehicles from the selected data file!");
          displayMenu();
      }
  }
  </code></pre>
  
  <p>// dispaly menu method</p>
  
  <pre><code>private static void displayMenu() {
      Scanner input = new Scanner(System.in);
  
      do {
          System.out.println("\n\n          Car Sales Menu");
          System.out.println("--------------------------------------");
          System.out.println("1 - Sort vehicles by owner's Last Name");
          System.out.println("2 - Sort vehicles by vehicle Model");
          System.out.println("3 - Sort vehicles by vehicle Cost\n");
          System.out.println("4 - List All Vehicles");
          System.out.println("5 - List All Cars");
          System.out.println("6 - List American Cars Only (Formal)");
          System.out.println("7 - List Foreign Cars only (Formal)");
          System.out.println("8 - List All Trucks");
          System.out.println("9 - List All Bicycles");
          System.out.print("\nSelect a Menu Option: ");
          getInput(input.next()); // Get user input from the keyboard 
      }
      while(true); // Display the menu until the user closes the program
  }
  </code></pre>
  
  <p>// getInput method</p>
  
  <pre><code>private static void getInput(String input) {
      switch(Convert.toInteger(input)) {
          case 1: // Sort Vehicles by Owner's Last Name
              Array.sortByOwnerName(vehicles);
              break;
          case 2: // Sort Vehicles by Vehicle Make &amp; Model
              Array.sortByVehicleMakeModel(vehicles);
              break;
          case 3: // Sort Vehicles by Vehicle Cost
              Array.sortByVehicleCost(vehicles);
              break;
          case 4: // List All Vehicles
              displayVehicleData(0);
              break;
  
          default:
              System.out.print("The entered value is unrecognized!");
              break;
      }
  }
  </code></pre>