import javax.swing.JFrame;

public class UGUIDriver
{
    public static void main(String args[])
    {        
        JFrame frame = new JFrame("Divisors..");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        DivisorsUser panel = new DivisorsUser();
        frame.getContentPane().add(panel);
        
        frame.pack();
        frame.setVisible(true);
    }
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class DivisorsUser extends JPanel {
    
    private JButton process;
    private JTextField number, divisor, result;
    private JLabel num, div;
    
    public DivisorsUser()
    {
        num = new JLabel("Enter a number: ");
        div = new JLabel("Number to test for divisor: ");
        number = new JTextField(10);
        divisor = new JTextField(10);
        result = new JTextField(30);
        process = new JButton("Process");
        process.addActionListener(new ButtonListener());
        
        add(num);
        add(number);
        add(div);
        add(divisor);
        add(result);
        
        setBackground(Color.white);
        setPreferredSize(new Dimension(300, 200));
    }
    
    private class ButtonListener implements ActionListener
    {
        public void actionPerformed (ActionEvent e)
        {
            if(e.getSource() == process)
            {
                number.getText();
                divisor.getText();
                
                if (number%divisor == '0')
                {
                    result.setText("Number is divisable");
                }
                else if (number%divisor != '0')
                {
                    result.setText("Number is NOT divisable");
                }
            }
        }
    }
}

number.setText(sum+"");

private class ButtonListener implements ActionListener
{
    public void actionPerformed (ActionEvent e)
    {
          if(e.getSource() == process)
          {
                 int num1 = 0, num2 = 0;
                 try {
                       num1 = Integer.parseInt(number.getText());
                       num2 = Integer.parseInt(divisor.getText());
                 }
                 catch (NumberFormatException ne) {
                        System.out.println("one of the tw is not an integer");
                        return;    // bye bye
                 }
                
                 if (num1%num2 == 0)
                       result.setText("Number is divisable");
                 else
                        result.setText("Number is NOT divisable");
                }
          }
}