Java Progress Bar (JProgressBar) - Swing Example

JProgressBar progressBar = new JProgressBar();

	public static void startProgress() {

		Runnable runnable = new Runnable() {

			public void run() {

				for (int i = 0; i <= 100; i++) {
					try {
						Thread.sleep(100);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					progressBar.setValue(i);
				}
				btnStart.setEnabled(true);
			}
		};
		new Thread(runnable).start();
	}

package com.java.myapp;

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class MyForm extends JFrame {

	static JProgressBar progressBar;
	static JButton btnStart;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);
		
		// ProgressBar
		progressBar = new JProgressBar();
		progressBar.setBounds(70, 43, 196, 26);
		progressBar.setStringPainted(true);
		getContentPane().add(progressBar);
		
		// Thread
		btnStart = new JButton("Start");
		btnStart.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				btnStart.setEnabled(false);
				startProgress();
			}
		});
		btnStart.setBounds(128, 113, 89, 23);
		getContentPane().add(btnStart);
		
	}
	
	public static void startProgress() {

		Runnable runnable = new Runnable() {

			public void run() {

				for (int i = 0; i <= 100; i++) {
					try {
						Thread.sleep(100);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					progressBar.setValue(i);
				}
				btnStart.setEnabled(true);
			}
		};
		new Thread(runnable).start();
	}
}

package com.java.myapp;

import java.awt.EventQueue;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JProgressBar;
import javax.swing.JButton;

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

public class MyForm extends JFrame {

	static JProgressBar progressBar;
	static JButton btnStart;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);
		
		// ProgressBar
		progressBar = new JProgressBar();
		progressBar.setStringPainted(true);
		
		// Thread
		btnStart = new JButton("Start");
		btnStart.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				btnStart.setEnabled(false);
				startProgress();
				final JComponent[] inputs = new JComponent[] {
						progressBar
				};
				JOptionPane.showMessageDialog(null, inputs, "ProgressBar", JOptionPane.YES_NO_CANCEL_OPTION);		
				
			}
		});
		btnStart.setBounds(128, 113, 89, 23);
		getContentPane().add(btnStart);
		
	}
	
	public static void startProgress() {

		Runnable runnable = new Runnable() {

			public void run() {

				for (int i = 0; i <= 100; i++) {
					try {
						Thread.sleep(100);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					progressBar.setValue(i);
				}
				btnStart.setEnabled(true);
			}
		};
		new Thread(runnable).start();
	}
}

package com.java.myapp;

import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;

import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;
import javax.swing.JButton;
import javax.swing.SwingWorker;
import javax.swing.UIManager;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

public class MyForm extends JFrame {

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);

		JButton btnStart = new JButton("Start");
		btnStart.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {

				EventQueue.invokeLater(new Runnable() {
					@Override
					public void run() {
						try {
							UIManager.setLookAndFeel(UIManager
									.getSystemLookAndFeelClassName());
						} catch (Exception ex) {

						}
						new BackgroundWorker().execute();
					}
				});

			}
		});
		btnStart.setBounds(128, 113, 89, 23);
		getContentPane().add(btnStart);

	}

	public class BackgroundWorker extends SwingWorker<Void, Void> {

		private JProgressBar pb;
		private JDialog dialog;

		public BackgroundWorker() {
			addPropertyChangeListener(new PropertyChangeListener() {
				@Override
				public void propertyChange(PropertyChangeEvent evt) {
					if ("progress".equalsIgnoreCase(evt.getPropertyName())) {
						if (dialog == null) {
							dialog = new JDialog();
							dialog.setTitle("Processing");
							dialog.setLayout(new GridBagLayout());
							dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
							GridBagConstraints gbc = new GridBagConstraints();
							gbc.insets = new Insets(2, 2, 2, 2);
							gbc.weightx = 1;
							gbc.gridy = 0;
							dialog.add(new JLabel("Processing..."), gbc);
							pb = new JProgressBar();
							pb.setStringPainted(true);
							gbc.gridy = 1;
							dialog.add(pb, gbc);
							dialog.pack();
							dialog.setLocationRelativeTo(null);
							dialog.setModal(true);
							JDialog.setDefaultLookAndFeelDecorated(true); 
							dialog.setVisible(true);
						}
						pb.setValue(getProgress());
					}
				}

			});
		}

		@Override
		protected void done() {
			if (dialog != null) {
				dialog.dispose();
			}
		}

		@Override
		protected Void doInBackground() throws Exception {
			for (int index = 0; index < 100; index++) {
				setProgress(index);
				Thread.sleep(100);
				/**
				 *  Do work
				 *  Do work
				 *  Do work
				 */
			}
			return null;
		}
	}

}