input to an integer (simply)

[chitwood]

I need help with this basic program. I am trying to convert an input to an integer but I cant use the way I have it written in this coding method. It has to be something simpler. Is there a solution to my problem?

import javax.swing.JOptionPane;

    public class Assignment4ITEC2260
   {
   
       public static void main(String[] args)
      {
         int number1;
         int number2;
         int num;
      
      
      
      // Prompt for first number
         do{
            String input = JOptionPane.showInputDialog(null,"Enter first number");
            if(input == null) 
               System.exit(1);
         
         // convert input to a integer
            try
            {
               number1 = Integer.parseInt(input.trim());
            }
                catch(NumberFormatException ex)
               {
                  number1 = 0;
               }
         }while(number1 < 1);
      
      // Prompt for second number
         do{
            String input = JOptionPane.showInputDialog
               (null,"Enter second number greater than first number");
            if(input == null) 
               System.exit(1);
         
         // convert input to a integer
            try
            {
               number2 = Integer.parseInt(input.trim());
            }
                catch(NumberFormatException ex)
               {
                  number2 = 0;
               }
         }while(number2 < number1);
      
      
      // display the odd numbers between the first number and the second number.
      
         String numbers = "";
      
      // using a for loop
         for(num = number1+1; num < number2;num++)
         {
         // check for odd number
            if((num % 2) != 0)
            {
               numbers = numbers + num + " ";
            }
         }
      
         JOptionPane.showMessageDialog
            (null,numbers,"using for loop", JOptionPane.INFORMATION_MESSAGE);
      
      // using a do loop
         numbers = "";
         num = number1+1;
      
         do{
         
         // check for odd number
            if((num % 2) != 0)
            {
               numbers = numbers + num + " ";
            }
         
            num++;
         
         } while(num < number2);
      
      
         JOptionPane.showMessageDialog
            (null,numbers,"using a do loop", JOptionPane.INFORMATION_MESSAGE);
      
      // using a do-while loop
      
         numbers = "";
         num = number1+1;
      
         while(num < number2)
         {
         
         // check for odd number
            if((num % 2) != 0)
            {
               numbers = numbers + num + " ";
            }
         
            num++;
         
         } 
      
         JOptionPane.showMessageDialog
            (null,numbers,"using a do-while loop", JOptionPane.INFORMATION_MESSAGE);
      
      
         System.exit(0);
      }
   
   }

Thanks,
Chitwood

[chitwood]

I cant use try/catch in number1 and number2 conversions? Does anyone have an easy solution?

[Fubarable]

Cross-posted from new to Java: Need help please????

Moderators, please dispose of this thread.

[pbrockway2]

... ...