import javax.swing.JOptionPane;
public class ArrayChallenge{
 public static void main (String[] args){
    int input = Integer.parseInt(JOptionPane.showInputDialog("Guess the number of numbers."));

    int[] arr = {3, 2, 1, 3, 8, 8, 1, 3, 2,};

    int counter = 0;

     for(int i = 0; i < arr.length; i++) {

         if(input == arr[i]){
          counter++;
        }
        }

     JOptionPane.showMessageDialog(null, "There were "+ counter + " of the number " + input);
    }
}