Controling flow of method

Question

got a problem with the following code... everytime some one enters something other than an int the code runs on till it finishes, problem is i want it to start at the question it was asking - ie 1, 2, or 3. I can add addition(); in the catch statement but that makes it start from the beginning of the count.. ie question 1. (which is a pain if your doing question 3) can any one help?
import java.util.*;
class Math {
    private void addition() {
     Scanner keyboard = new Scanner(System.in);
     int sum = 0, num = 0, count = 0, answer = 0;
     for(num = 0; num < 3; num++) {
         System.out.println("Question " + (num + 1));
         System.out.println("What is the sum of these numbers?");
         int randomAddition = new Random().nextInt(6);
         for(count = 0; count < randomAddition; count++) {
          int rand = new Random().nextInt(11);
          System.out.print(rand + " ");
          sum = sum + rand;
         System.out.println();
         try {
          answer = keyboard.nextInt();
         catch (java.util.InputMismatchException e) {
          System.out.println("Enter a whole number only");
         System.out.println("Your answer is " + answer);
         System.out.println("The correct answer is " + sum);
         System.out.println();
         if(sum == answer) {
          System.out.println("CORRECT ANSWER");
         else {
          System.out.println("Incorrect, try again");
          num--;
         sum = 0;
    public static void main(String[] arg) {
     Math start = new Math();
     start.addition();
}

Answer 1

I'm not sure I understand what's going on with the input and the random numbers.
Here's an idea of how you might accomplish this. It's a bit funny with the do/while, but perhaps you can spend the time figuring it out. Use it as a template for thought:
import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;
public class IntArrayAdder
   public static final int DEFAULT_ARRAY_LENGTH = 32;
   public static int [] getValues(Scanner scanner, String prompt)
      List values = new ArrayList(DEFAULT_ARRAY_LENGTH);
      try
         do
            System.out.print(prompt);
            int value = scanner.nextInt();
            values.add(new Integer(value));
         } while (scanner.hasNext());
      catch (Exception e)
         System.out.println("end of input");
      int [] valuesAsArray = new int[values.size()];
      for (int i = 0; i < valuesAsArray.length; ++i)
         valuesAsArray[i] = ((Integer)values.get(i)).intValue();
      return valuesAsArray;
   public static int sumArray(int [] values)
      int sum = 0;
      for (int i = 0; i < values.length; ++i)
         sum += values;
return sum;
public static void main(String [] args)
try
int [] values = getValues(new Scanner(System.in), "input an int: ");
System.out.println("sum: " + sumArray(values));
catch (Exception e)
e.printStackTrace();