File Downloader: getting progress out the download

[Jaeela]

I have this code to download a specified file at the specified path and name, but i cannot get it to display the percent already downloaded, or the file size of the download, or the amount i have already downloaded. These three operations are in the edit() method, and i tried to call it in the downloading loop, but then it will not download the file. I tried threads, but i don't think i used them right. Any help is appreciated :)
SampleDownload class:

import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class SampleDownload {

	public static double percentDled;
	public static int count = 0;
	public static int dlSize;
	public static dlgui gui;

	public static void main(String args[]) {
		gui =  new dlgui();
		gui.showIt();
		while(!dlgui.b) {
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	public static void download(String s, String path) throws IOException {
		URL dlURL = new URL(s);
		HttpURLConnection con = (HttpURLConnection) dlURL.openConnection();
		int i = con.getContentLength();
		double dlSize =  i * 1024;
		BufferedInputStream in = new java.io.BufferedInputStream(dlURL.openStream());
		FileOutputStream fos = new java.io.FileOutputStream(path);
		BufferedOutputStream bout = new BufferedOutputStream(fos,1024);
		byte data[] = new byte[1024];
		while((count = in.read(data,0,1024)) != -1) {
			bout.write(data,0,count);
		}



		bout.close();
		in.close();
	}

	public static void edit() {
		gui.label_2.setText("Downloaded:" + percentDled + "%");
		gui.label_3.setText("Downloaded:"+ count * 1024 + " KB out of "+ dlSize + " KB");
	}
}

dlgui class:

class dlgui extends JFrame {
    JTextField textfield_1;
    JLabel label_1;
    JLabel label_2;
    JLabel label_3;
    JLabel label_4;
    JTextField textfield_2;
    JButton button_1;
    public String url1;
    public static boolean b;

    public dlgui() {
        dlguiLayout customLayout = new dlguiLayout();

        getContentPane().setFont(new Font("Helvetica", Font.PLAIN, 12));
        getContentPane().setLayout(customLayout);

        textfield_1 = new JTextField("");
        getContentPane().add(textfield_1);

        label_1 = new JLabel("URL:");
        getContentPane().add(label_1);

        label_2 = new JLabel("Downloaded:" + SampleDownload.percentDled + "%");
        getContentPane().add(label_2);

        label_3 = new JLabel("Downloaded:"+ SampleDownload.count * 1024 + " KB out of "+ SampleDownload.dlSize + " KB");
        getContentPane().add(label_3);

        label_4 = new JLabel("Save To:");
        getContentPane().add(label_4);

        textfield_2 = new JTextField("C:/Users/AJ/");
        getContentPane().add(textfield_2);

        button_1 = new JButton("Start!");
        button_1.addActionListener(new ActionListener () {
        	public void actionPerformed(ActionEvent e) {
        		URL ghf = null;
        		b = true;
        		String path = textfield_2.getText();
        		url1 = textfield_1.getText();
        		try {
					ghf = new URL(url1);
				} catch (MalformedURLException e2) {
					e2.printStackTrace();
				}
        		try {
					SampleDownload.download(url1,path);
				} catch (IOException e1) {
					e1.printStackTrace();
				}
        	}
        });
        getContentPane().add(button_1);

        setSize(getPreferredSize());

        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    public void showIt() {
        dlgui window = new dlgui();

        window.setTitle("dlgui");
        window.pack();
        window.setVisible(true);
    }
}

class dlguiLayout implements LayoutManager {

    public dlguiLayout() {
    }

    public void addLayoutComponent(String name, Component comp) {
    }

    public void removeLayoutComponent(Component comp) {
    }

    public Dimension preferredLayoutSize(Container parent) {
        Dimension dim = new Dimension(0, 0);

        Insets insets = parent.getInsets();
        dim.width = 283 + insets.left + insets.right;
        dim.height = 174 + insets.top + insets.bottom;

        return dim;
    }

    public Dimension minimumLayoutSize(Container parent) {
        Dimension dim = new Dimension(0, 0);
        return dim;
    }

    public void layoutContainer(Container parent) {
        Insets insets = parent.getInsets();

        Component c;
        c = parent.getComponent(0);
        if (c.isVisible()) {c.setBounds(insets.left+8,insets.top+40,256,24);}
        c = parent.getComponent(1);
        if (c.isVisible()) {c.setBounds(insets.left+8,insets.top+8,80,24);}
        c = parent.getComponent(2);
        if (c.isVisible()) {c.setBounds(insets.left+8,insets.top+104,120,24);}
        c = parent.getComponent(3);
        if (c.isVisible()) {c.setBounds(insets.left+8,insets.top+136,184,24);}
        c = parent.getComponent(4);
        if (c.isVisible()) {c.setBounds(insets.left+8,insets.top+72,72,24);}
        c = parent.getComponent(5);
        if (c.isVisible()) {c.setBounds(insets.left+88,insets.top+72,176,24);}
        c = parent.getComponent(6);
        if (c.isVisible()) {c.setBounds(insets.left+200,insets.top+136,72,24);}
    }
}

[Norm]

Is your problem:
gathering the statistics
or displaying them?

Where do you call the edit() method?

You need to add lots of debug printlns to show what the code is doing.

[Jaeela]

My problem is displaying them. Sorry, I called the edit() before the while loop, and I tried it in the while loop and both times it did not work. It would complete the download and freeze, not updating the statistics either of the times.

[Norm]

You need to add lots of printlns to show where the code is executing and what the values are as the code executes.

[Jaeela]

i know that the code is not even executing the edit method, because i changed it to have nothing by default and when the edit method is called, it should show "agh" in each JLabel, and it did not change them. I will add printlns

[Jaeela]

i added printlns in edit() download() and the actionlistener for the start button
they all displayed what they were supposed to, so it's a matter of the two lines:
gui.label_2.setText("Downloaded:" + percentDled + "%");
gui.label_3.setText("Downloaded:"+ count * 1024 + " KB out of "+ dlSize + " KB");

[Norm]

One problem I am having with your code is that is has too many static variables and methods.
There should only be one: main.

[Jaeela]

figured it out.

[Norm]

Get rid of all the static.