Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingWorker;

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new TestPane());
        frame.pack();
        frame.setVisible(true);
    }
}

class ProgressWorker extends SwingWorker<Object, Object> {
    @Override
    protected Object doInBackground() throws Exception {
        for (int i = 0; i < 100; i++) {
            setProgress(i);
            try {
                Thread.sleep(25);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return null;
    }
}

class TestPane extends JPanel {
    JProgressBar pbProgress = new JProgressBar();
    JButton start;

    public TestPane() {
        add(pbProgress);
        start = new JButton("Start");
        add(start);
        start.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                start.setEnabled(false);
                ProgressWorker pw = new ProgressWorker();
                pw.addPropertyChangeListener(new PropertyChangeListener() {

                    @Override
                    public void propertyChange(PropertyChangeEvent evt) {
                        String name = evt.getPropertyName();
                        if (name.equals("progress")) {
                            int progress = (int) evt.getNewValue();
                            pbProgress.setValue(progress);
                            repaint();
                        } else if (name.equals("state")) {
                            SwingWorker.StateValue state = (SwingWorker.StateValue) evt.getNewValue();
                            switch (state) {
                            case DONE:
                                start.setEnabled(true);
                                break;
                            }
                        }
                    }
                });
                pw.execute();
            }
        });
    }
}