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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;


public class ThreadTest extends JFrame {

	private JButton b = new JButton("Blocking button...");
	private JButton nb = new JButton("Non-Blocking button...");
	private JTextField f = new JTextField();

	public ThreadTest() {
		// TODO Auto-generated constructor stub
	}
	
	protected void initComponents() throws Exception {
		
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		getContentPane().setLayout(new BorderLayout(10,10));
		
		getContentPane().add(b, BorderLayout.NORTH);
		getContentPane().add(nb, BorderLayout.SOUTH);
		getContentPane().add(f, BorderLayout.CENTER);
		
		b.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				f.setText("Start...");
				f.repaint();
				try {

					// Blocking external IO
					for (int i = 0; i < 10; i++) {
						f.setText("... " + i + " ...");
						Thread.sleep(1000l);
					}

					f.setText("...done.");
				} catch (Exception ex) {
					ex.printStackTrace();
				}
			}

		});

		nb.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent e) {
				f.setText("Start...");
				f.repaint();

				new Thread(new Runnable() {
					@Override
					public void run() {

						try {
							// Blocking external IO
							for (int i = 0; i < 10; i++) {
								f.setText("... " + i + " ...");
								f.repaint();
								Thread.sleep(1000l);
							}

							f.setText("...done.");
							f.repaint();
						} catch (Exception ex) {
							ex.printStackTrace();
						}
					}
				}).start();
			}

		});
		
		pack();
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {

		ThreadTest t = new ThreadTest();
		
		t.initComponents();
		
		t.setVisible(true);
	}

}