LAST QUESTION ABOUT MY CODE (promise)

Question

Here is my final code for the 6/49 lottery game (it's a more simplified version so don't mind that there is no Bonus Number) sorry for the long code...
I'll just post my question here for those who don't want to go through all of this.
I want to throw an exception and let it catch it after the first input box appears. So let's say I entered text or a null value in the first input box then it would loop back to the beginning of the program and output a message saying "You entered a wrong value!"
But in the code that I have, even if I enter text or just press enter without inputting anything, it just moves on to the next input box, until on the 6th input box it says "invalid value".
So how would I proceed in doing this?
THANKS!
import java.util.Random;
import javax.swing.*;
public class Game
     public static void main (String args[])     
          mGame();
     }//end main
     public static void mGame()
          JOptionPane.showMessageDialog(null, "Ali Uz\n110231263", "About", JOptionPane.PLAIN_MESSAGE);
          Random randomNumbers = new Random();
          String sInput,
                  win = "";
          int iNumber1=0,
               iNumber2=0,
               iNumber3=0,
               iNumber4=0,
               iNumber5=0,
               iNumber6=0,
               match=0,
               randNumber,
               prize=0;
         int array [] = new int [50];
          try
                    //get the numbers from the user
                    sInput=JOptionPane.showInputDialog ("Enter winning number 1.");
                    sInput=JOptionPane.showInputDialog ("Enter winning number 2.");
                    sInput=JOptionPane.showInputDialog ("Enter winning number 3.");
                    sInput=JOptionPane.showInputDialog ("Enter winning number 4.");
                    sInput=JOptionPane.showInputDialog ("Enter winning number 5.");
                    sInput=JOptionPane.showInputDialog ("Enter winning number 6.");
                    //convert strings to integers
                    iNumber1=Integer.parseInt(sInput);
                    iNumber2=Integer.parseInt(sInput);
                    iNumber3=Integer.parseInt(sInput);
                    iNumber4=Integer.parseInt(sInput);
                    iNumber5=Integer.parseInt(sInput);
                    iNumber6=Integer.parseInt(sInput);
         }//end try
          catch (Exception e)
                    System.out.println ("Invalid input please try again");
                    System.exit (0);
          }//end catch
          for (int i=1; i<=6; i++)
               randNumber = 1 + randomNumbers.nextInt(49);
               array [randNumber] = randNumber;
               if (randNumber==iNumber1)
                         match++;
               else
                         if (randNumber==iNumber2)
                                   match++;
                         else
                                   if (randNumber==iNumber3)
                                             match++;
                                   else
                                             if (randNumber==iNumber4)
                                                       match++;
                                             else
                                                       if (randNumber==iNumber5)
                                                                 match++;
                                                       else
                                                                 if (randNumber==iNumber6)
                                                                           match++;
               if (match==3)
                    prize = 10;
                    if (match==4)
                         prize = 1000;
                         if (match==5)
                              prize = 10000;
                              if (match==6)
                                   prize = 1000000;
          for ( int counter = 1; counter < array.length; counter ++)
                  if (counter % 7 == 0)
                            System.out.printf("%s\n", array [counter]);
                 else
                        System.out.printf("%s ",  array [counter]); 
               if (match >= 3)
                         System.out.println ("You have gotten " + match + "/6 correct\nYou have won $" + prize);
               else
                         System.out.println ("You have gotten " + match + "/6 correct\nSorry you have lost! Please try again");     
}//end class Assignment1

Answer 1

Your problem here as that the exception you want to
throw takes place here
iNumber1=Integer.parseInt(sInput);
public void showMessage(int number){
try{
sInput=JOptionPane.showInputDialog ("Enter
nter winning number " + number);
iNumber1=Integer.parseInt(sInput);
}catch(Exception e){
System.out.println ("Invalid input please try
e try again");
System.exit (0);
}then call this method from inside a for loop:
for(int i=1; i <=6; i++){
showMessage(i);
}Hope that helps you a littleOnly catch NumberFormatException there, though.