Solution to Revision Test 1

import javax.swing.JOptionPane;
public class HandPhone {
    public static void main(String[] args) {
     String input, modelName="";
     int modelNo, qty;
     double price = 0, totPrice;

     input = JOptionPane.showInputDialog(null,
                                         "Enter Model No.: \n" +
                                         "1 - Nokia N10 \n" +
                                         "2 - Nokia S20 \n" +
                                         "3 - Nokia K30 \n" +
                                         "4 - Nokia E40 \n" +
                                         "5 - Nokia D50 \n",
                                         "Handphone", JOptionPane.QUESTION_MESSAGE);

     modelNo = Integer.parseInt(input);

     input = JOptionPane.showInputDialog(null, "Enter no. of handphones to purchase");
     qty = Integer.parseInt(input);

     switch (modelNo) {
     case 1:
         modelName = "Nokia N10";
         price = 1000;
         break;
     case 2:
        modelName = "Nokia S20";
        price = 888;
        break;
    case 3:
         modelName = "Nokia K30";
         price = 600;
         break;
     case 4:
          modelName = "Nokia E40";
          price = 400;
          break;
      case 5:
         modelName = "Nokia D50";
         price = 100;
         break;
     }//end switch

     totPrice = qty * price;

     JOptionPane.showMessageDialog(null, "Total purchase price for " +
                                   qty + " " + modelName + " is $" + totPrice);
    } //end main
} //end class