[kewlgeye]

This is what I changed. it compiles, but I am still not able to start a new line after 40 numbers show.

Code:

public class MyAction implements ActionListener{
        public void actionPerformed(ActionEvent e){
            String input = JOptionPane.showInputDialog(null,
                                      "Enter the size of the array: ");
            int arraySize = //console.nextInt();
                            Integer.parseInt(input.trim());
            int[] list = new int[arraySize];
            for (int arrayIndex = 0; arrayIndex < list.length; arrayIndex++){
	    list[arrayIndex] = arraySize - arrayIndex;}

            values = Arrays.toString(list);
	    if ((arraySize - 0 + 1) % 40 != 0)

            JOptionPane.showMessageDialog(frame, values + " " +
                                  "are your numbers", "Your Silly Numbers", 
                                   JOptionPane.INFORMATION_MESSAGE);

            }
        }