Test.java

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;

public class Test
{
	public static void main(String[] args)
	{
		JFrame frame = new JFrame("Example Program");
		JLabel label = new JLabel("0");
		JButton button = new JButton("Click me");

		frame.setSize(400, 400);
		label.setBounds(50, 50, 150, 30);
		button.setBounds(100, 100, 150, 30);

		frame.add(label);
		frame.add(button);

		frame.setLayout(null);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		button.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
					int x = 0;

					while (x <= 10000000)
					{
						String x_string = Integer.toString(x);
						label.setText(x_string);
						x++;
					}

			} // end actionPerformed method

		}); // end actionListener

	} // end main method

} // end class Test