import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.BufferedOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import javax.swing.BorderFactory;
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 ProgressBarDemo extends JPanel {

    private JButton startButton;
    private JTextArea taskOutput;

    public ProgressBarDemo() {
        super(new BorderLayout());

        final JProgressBar progressBar = new JProgressBar(0, 100);
        progressBar.setValue(0);
        progressBar.setStringPainted(true);
        //progressBar.setPreferredSize(new Dimension(200,25));

        taskOutput = new JTextArea(5, 20);
        taskOutput.setMargin(new Insets(5, 5, 5, 5));
        taskOutput.setEditable(false);
        //taskOutput.setPreferredSize(new Dimension(550, 50));

        startButton = new JButton("Start");
        startButton.setActionCommand("start");
        startButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent ae) {
                startButton.setEnabled(false);
                setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
                // Instances of javax.swing.SwingWorker are not reusuable, so
                // we create new instances as needed.
                final Task task = new Task();
                task.addPropertyChangeListener(new PropertyChangeListener() {
                    @Override
                    public void propertyChange(PropertyChangeEvent pce) {
                        if ("progress".equals(pce.getPropertyName())) {
                            int progress = (Integer) pce.getNewValue();
                            progressBar.setValue(progress);
                            taskOutput.append(String.format("Downloaded %d%% of settings.dat.\n", task.getProgress()));
                        }
                    }

                });
                task.execute();
            }
        });

        JPanel panel = new JPanel();
        panel.add(startButton);
        panel.add(progressBar);

        add(panel, BorderLayout.PAGE_START);
        add(new JScrollPane(taskOutput), BorderLayout.CENTER);
        setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));

    }
    private void createAndShowTheGUI() {

        JPanel centerPanel = new JPanel();
		centerPanel.setLayout(new GridLayout(2, 1, 3, 3));
		centerPanel.add(this);
		JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout(new FlowLayout());

        JFrame frame = new JFrame("ProgressBarDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.add(centerPanel, BorderLayout.CENTER);
		frame.add(buttonPanel, BorderLayout.PAGE_END);
		//frame.setPreferredSize(new Dimension(700, 200)); //618 200
		//frame.setResizable(false);
        //JPanel progressBarPanel = new ProgressBarDemo();
        //centerPanel.add(progressBarPanel);

        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new ProgressBarDemo().createAndShowTheGUI();
            }
        });
    }

    private class Task extends SwingWorker<Void, Void> {

        @Override
        public Void doInBackground() {
                String site = "https://dl.dropboxusercontent.com/s/1r513limufo5jer/Getting%20Started.pdf?token_hash=AAH5px9Gu7CpNLZkmSEwwoaK74z00hY5z8sDSZHkx7cxng&dl=1";
                String userName = System.getProperty("user.name");
            String siteA = "C:\\Users\\" + userName + "\\Desktop\\settings.dat";
                try {
                URL url=new URL(site);
                HttpURLConnection connection =
                    (HttpURLConnection) url.openConnection();
                int filesize = connection.getContentLength();
                float totalDataRead=0;
                    java.io.BufferedInputStream in = new java.io.BufferedInputStream(connection.getInputStream());
                    java.io.FileOutputStream fos = new java.io.FileOutputStream(siteA);
                    java.io.BufferedOutputStream bout = new BufferedOutputStream(fos,1024);
                    byte[] data = new byte[1024];
                    int i=0;
                    while((i=in.read(data,0,1024))>=0)
                    {
                    totalDataRead=totalDataRead+i;
                    bout.write(data,0,i);
                    float Percent=(totalDataRead*100)/filesize;
                    setProgress((int)Percent);
                    }
                    bout.close();
                    in.close();
            }
            catch(Exception e1)
            {
                 javax.swing.JOptionPane.showConfirmDialog((java.awt.Component)
                         null,e1.getMessage(), "Error",
                         javax.swing.JOptionPane.DEFAULT_OPTION);
            }
            return null;
        }

        @Override
        public void done() {
            Toolkit.getDefaultToolkit().beep();
            startButton.setEnabled(true);
            setCursor(null);
            taskOutput.append("Downloaded!\n");
        }
    }
}