Thread: none of my friends can run my simple game launcher

Hi. i am having a problem. i made a program that downloads and runs the game(only basic frame for now), but when my friends try to open it. it simply wont open and it works on my computer. no errorrs no nothing.

 
import java.awt.Component;
import javax.swing.JFrame;
public class main extends JFrame
{
 
public main(){
 
 
}
 
 
    public static final void main(String[] args) throws Exception
    {
    new main2();
 
 
    }
}

 
 
 
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
 
public class JPanelWithBackground extends JPanel {
 
  private Image backgroundImage,exit,start;
 
  // Some code to initialize the background image.
  // Here, we use the constructor to load the image. This
  // can vary depending on the use case of the panel.
  public JPanelWithBackground(String fileName) throws IOException {
    backgroundImage = ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\hg.png"));
    exit = ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\exit1.png"));
    start = ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\start.png"));
  }
 
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
 
    // Draw the background image.
    g.drawImage(backgroundImage, 0, 0,500,300, this);
    g.drawImage(exit,450,0,50,50,this);
    g.drawImage(start,260,100,90,30,this);
  }
}

import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JWindow;
 
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/**
 *
 * @author User
 */
class main2 extends JWindow implements ActionListener{
public BufferedImage start1,hg,exit1;
public JButton exit,start;
    private Thread thread;
 
 
 
    public void display()
    {
 
        setBounds(400,400,500,300);
        setVisible(true);
 
 
    }
 
       private void load() {
 
 
      try {
 
 
         start1 =  ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\start.png"));
         hg =  ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\hg.png"));
         exit1 =  ImageIO.read(new File("C:\\Users\\User\\Desktop\\titles\\exit.png"));
 
      } catch(IOException e) {
         System.out.println("failed");
      }
         }
 
 
 
 
 
    public main2() {
    try {
        try {
            getContentPane().add(new JPanelWithBackground(""));
            load();
            display();
 
            requestFocusInWindow();
            this.setFocusable(true);
            exit = new JButton("exit");
            start = new JButton("start");
            start.addActionListener(this);
            start.setFocusable(true);
            JProgressBar current = new JProgressBar(0, 100);
            Container c = getContentPane();
            c.setLayout(null);
            c.add(current);
            c.add(start);
            c.add(exit);
            start.setBounds(260,100,90,30);
            exit.setIcon(new ImageIcon(exit1));
            exit.setBounds(450, 0, 30, 30);
            exit.setBackground(null);
            exit.setBorder(null);
            exit.setBorderPainted(false);
            exit.setContentAreaFilled(false);
            exit.setFocusPainted(false); 
            exit.setVisible(true);
            exit.addActionListener(this);
            setVisible(true);
            start.setIcon(new ImageIcon(start1));
            String site="http://host.bugs3.com/hg/update.zip";
            if(!new File("C://The Hunger Games").exists()){
              new File("C://The Hunger Games").mkdir();
          } else {
 
            }
 
            String folder="C://The Hunger Games//update.zip";
            JFrame frm=new JFrame();
            current.setSize(50,50);
            // current.setValue(0);
            current.setBounds(50, 50, 350, 25);
            current.setStringPainted(true);
            current.setBackground(Color.green);
            current.setForeground(Color.red);
            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(folder);
                    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;
                    current.setValue((int)Percent);
                    }  
                    bout.close();
                    in.close();
            }
            catch(Exception e)
            {
                 javax.swing.JOptionPane.showConfirmDialog((java.awt.Component)
                         null,e.getMessage(), "Error",
                         javax.swing.JOptionPane.DEFAULT_OPTION);
            }
        }
        catch(IOException ex)
        {
             Logger.getLogger(main2.class.getName()).log(
                     Level.SEVERE, null, ex);
        }
     unzipFile("C://The Hunger Games//update.zip");
    } catch (IOException ex) {
        Logger.getLogger(main2.class.getName()).log(Level.SEVERE, null, ex);
    }
    }
public void unzipFile(String filePath) throws IOException{
 
        FileInputStream fis = null;
        ZipInputStream zipIs = null;
        ZipEntry zEntry = null;
        try {
            fis = new FileInputStream(filePath);
            zipIs = new ZipInputStream(new BufferedInputStream(fis));
            while((zEntry = zipIs.getNextEntry()) != null){
                try{
                    byte[] tmp = new byte[4*1024];
                    FileOutputStream fos = null;
                    String opFilePath = "C://The Hunger Games//"+zEntry.getName();
                    System.out.println("Extracting file to "+opFilePath);
                    fos = new FileOutputStream(opFilePath);
                    int size = 0;
                    while((size = zipIs.read(tmp)) != -1){
                        fos.write(tmp, 0 , size);
                    }
                    fos.flush();
                    fos.close();
                } catch(Exception ex){
 
                }
            }
            zipIs.close();
        } catch (FileNotFoundException e) {
 
            e.printStackTrace();
        } 
    }
 
 
    @Override
    public void actionPerformed(ActionEvent e) {
    if(e.getSource() == exit) {
        System.exit(0);
    }
    if(e.getSource() == start) {
        dispose();
        try {
        Process ps=Runtime.getRuntime().exec(new String[]{"java","-jar","C://The Hunger Games//HungerGamesClient.jar"});
        ps.waitFor();
        java.io.InputStream is=ps.getInputStream();
        byte b[]=new byte[is.available()];
        is.read(b,0,b.length);
        System.out.println(new String(b));
        } catch (IOException ex) {
            Logger.getLogger(main2.class.getName()).log(Level.SEVERE, null, ex);
        } catch (InterruptedException ex) {
            Logger.getLogger(main2.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    }
 
}

Originally Posted by KevinWorkman

Can you post the code that isn't working (preferably as an SSCCE)? How are your friends trying to run your code? What error do they see?

i already posted the code. my friends are running it as a .jar

--- Update ---

Originally Posted by Norm

What files do your friends have and how are they executing the java program?

Have them open a command prompt window and execute your code there. Error messages should be shown on the command prompt window. Copy the contents of the window and paste it here.

They dont have images of this launcher but it works without them for me. My friends are offline now, but i remember that when i tryed to tell them to run it trough command prompt, it thrown error about file download and extraction and there was something else but i dont remember what. Whye could this happen?

sorry. edited. first file is main

my codes usually have too much writen in them.. but can this couse my problem?

So.. If there are no image files, launcher wont even show jwindow?

Ok thanks, the problem was image locations