How to add a progress bar?

Question

I have been trying to understand how to add a progress bar, I can create one within the GUI I am implementing and get it to appear but even after checking through http://doc

Answer 1

How about this,

1. JFrame->JButton (BorderLayout.NORTH)

2. JFrame-> JPanel->JProgressBar (BorderLayout.SOUTH)

3. You can add button part where ever you like, for example when Progress progress = ...; state=true; progress.waitFor(); state=false;

   private static void daa() {
       //Frame
       JFrame frame = new JFrame("Frame");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.pack();
       frame.setVisible(true);
       frame.setSize(frame.getWidth() + 55, frame.getHeight() + 55);
   
       //Button
       JButton jButton = new JButton("State");
       frame.add(jButton, BorderLayout.NORTH);
   
       //Progress Bar
       JProgressBar progressBar = new JProgressBar();
       progressBar.setIndeterminate(true);
   
       //Text for progress bar
       JPanel panel = new JPanel(new BorderLayout());
       panel.add(progressBar);
       panel.add(new JLabel("Please wait......."), BorderLayout.PAGE_START);
   
       //linking
       panel.add(progressBar);
       frame.add(panel, BorderLayout.SOUTH);
   
       boolean[] state = {false};
       jButton.addActionListener(new ActionListener() {
           @Override
           public void actionPerformed(ActionEvent e) {
               state[0] = !state[0];
               state();
           }
   
           private void state() {
               if (state[0] == true) {
                   panel.hide();
               } else {
                   panel.show();
               }
   
           }
       });
   }