Java by API/javax.swing/SwingWorker

extends SwingWorker<R, T>

   <source lang="java">
 

import java.awt.LayoutManager; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.List; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JProgressBar; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.SwingWorker; public class Main {

 public static void main(String[] args) {
   JTextArea textArea = new JTextArea(10, 20);
   final JProgressBar progressBar = new JProgressBar(0, 10);
   final CounterTask task = new CounterTask();
   task.addPropertyChangeListener(new PropertyChangeListener() {
     public void propertyChange(PropertyChangeEvent evt) {
       if ("progress".equals(evt.getPropertyName())) {
         progressBar.setValue((Integer) evt.getNewValue());
       }
     }
   });
   JButton startButton = new JButton("Start");
   startButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       task.execute();
     }
   });
   JButton cancelButton = new JButton("Cancel");
   cancelButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       task.cancel(true);
     }
   });
   JPanel buttonPanel = new JPanel();
   buttonPanel.add(startButton);
   buttonPanel.add(cancelButton);
   JPanel cp = new JPanel();
   LayoutManager layout = new BoxLayout(cp, BoxLayout.Y_AXIS);
   cp.setLayout(layout);
   cp.add(buttonPanel);
   cp.add(new JScrollPane(textArea));
   cp.add(progressBar);
   JFrame frame = new JFrame("SwingWorker Demo");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setContentPane(cp);
   frame.pack();
   frame.setVisible(true);
 }

} class CounterTask extends SwingWorker<Integer, Integer> {

 @Override
 protected Integer doInBackground() throws Exception {
   int i = 0;
   int count = 10;
   while (!isCancelled() && i < count) {
     i++;
     publish(new Integer[] { i });
     setProgress(count * i / count);
     Thread.sleep(1000);
   }
   return count;
 }
  
 protected void process(List<Integer> data) {
   for (int i : data)
     System.out.println(i);
 }
 @Override
 protected void done() {
   if (isCancelled())
     System.out.println("Cancelled !");
   else
     System.out.println("Done !");
 }

}

 </source>
   
  
 
  

SwingWorker: publish(T... chunks)

   <source lang="java">
 

import java.awt.LayoutManager; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.List; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JProgressBar; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.SwingWorker; public class Main {

 public static void main(String[] args) {
   JTextArea textArea = new JTextArea(10, 20);
   final JProgressBar progressBar = new JProgressBar(0, 10);
   final CounterTask task = new CounterTask();
   task.addPropertyChangeListener(new PropertyChangeListener() {
     public void propertyChange(PropertyChangeEvent evt) {
       if ("progress".equals(evt.getPropertyName())) {
         progressBar.setValue((Integer) evt.getNewValue());
       }
     }
   });
   JButton startButton = new JButton("Start");
   startButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       task.execute();
     }
   });
   JButton cancelButton = new JButton("Cancel");
   cancelButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       task.cancel(true);
     }
   });
   JPanel buttonPanel = new JPanel();
   buttonPanel.add(startButton);
   buttonPanel.add(cancelButton);
   JPanel cp = new JPanel();
   LayoutManager layout = new BoxLayout(cp, BoxLayout.Y_AXIS);
   cp.setLayout(layout);
   cp.add(buttonPanel);
   cp.add(new JScrollPane(textArea));
   cp.add(progressBar);
   JFrame frame = new JFrame("SwingWorker Demo");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setContentPane(cp);
   frame.pack();
   frame.setVisible(true);
 }

} class CounterTask extends SwingWorker<Integer, Integer> {

 @Override
 protected Integer doInBackground() throws Exception {
   int i = 0;
   int count = 10;
   while (!isCancelled() && i < count) {
     i++;
     publish(new Integer[] { i });
     setProgress(count * i / count);
     Thread.sleep(1000);
   }
   return count;
 }
  
 protected void process(List<Integer> data) {
   for (int i : data)
     System.out.println(i);
 }
 @Override
 protected void done() {
   if (isCancelled())
     System.out.println("Cancelled !");
   else
     System.out.println("Done !");
 }

}

 </source>