JProgressBar : JProgressBar « Swing « Java Tutorial

There are five different constructors for JProgressBar:

public JProgressBar()
JProgressBar aJProgressBar = new JProgressBar();

public JProgressBar(int orientation)
JProgressBar aJProgressBar = new JProgressBar(JProgressBar.VERTICAL);
JProgressBar bJProgressBar = new JProgressBar(JProgressBar.HORIZONTAL);

public JProgressBar(int minimum, int maximum)
JProgressBar aJProgressBar = new JProgressBar(0, 500);

public JProgressBar(int orientation, int minimum, int maximum)
JProgressBar aJProgressBar = new JProgressBar(JProgressBar.VERTICAL, 0, 1000);

public JProgressBar(BoundedRangeModel model)
// Data model, initial value 0, range 0-250, and extent of 0
DefaultBoundedRangeModel model = new DefaultBoundedRangeModel(0, 0, 0, 250);
JProgressBar aJProgressBar = new JProgressBar(model);
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.JProgressBar;

public class JProgressBarSetValue extends JFrame {
  JProgressBar bar = new JProgressBar();
  JButton step = new JButton("Step");

  public JProgressBarSetValue() {
    step.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        int value = bar.getValue() + 7;
        if (value > bar.getMaximum()) {
          value = bar.getMaximum();

    getContentPane().add(bar, BorderLayout.NORTH);
    getContentPane().add(step, BorderLayout.EAST);

  public static void main(String arg[]) {
    new JProgressBarSetValue();

14.32.2.Creating a JProgressBar Component with an Unknown Maximum
14.32.3.A progress bar is used for lengthy tasks.
14.32.4.Labeling a JProgressBarLabeling a JProgressBar
14.32.5.Virtical JProgressBarVirtical JProgressBar
14.32.6.Creating a modal progress dialog
14.32.7.Set all the values at once by using the model
14.32.8.Using an Indeterminate JProgressBarUsing an Indeterminate JProgressBar
14.32.9.Displaying the Percentage Done on a JProgressBar Component
14.32.10.Getting and Setting the Values of a JProgressBar Component
14.32.11.Listening for Value Changes in a JProgressBar Component
14.32.12.Handling JProgressBar Events: notification of data model changes through a ChangeListenerHandling JProgressBar Events: notification of data model changes through a ChangeListener
14.32.13.ProgressBar and Task
14.32.14.SwingWorker and ProgressBar
14.32.15.Customizing JProgressBar Look and Feel