Why the app gives receive failed message?

[phpuser123]

I am running an app that sends a query to a server and the server returns a string query back. Using the received query, the client formats the string and converts it to URL. Then, loads a map using this url. However, after client receives the string query and formats it, it displays receive failed ..
Why is it giving this msg?

 
public void run() {
        try {
            System.out.println("Sending message...");
            stringItem.setText(stringItem.getText() + "1");
            sendMessage("Query,map,$,start,211,Arsenal,!");
           stringItem.setText(stringItem.getText() + "2");
            String unformattedurl = receiveMessage();
            stringItem.setText(stringItem.getText() + "3");
            stringItem.setText(unformattedurl);
             System.out.println("Receiving message..."+unformattedurl);
            String url = getURL(unformattedurl);
            System.out.println("formatted url is.."+url);
            connection.close();
             //url = "http://maps.google.com/maps/api/staticmap?center=100,20&zoom=14&size=500x400&format=JPEG&maptype=roadmap&sensor=false";
            //URL = getURL(unformattedurl);
            URL = url;
 
            stringItem.setText(stringItem.getText() + 6);
            //Imageloader imageloader=new Imageloader(stringItem,item,url);
            System.out.println("Loading image...");
 
                    try {System.out.println("Thread1...");
                       // stringItem.setText(URL);
                    stringItem.setText(stringItem.getText() + 7);
                        System.out.println("Thread2...");
                       // stringItem.setText(stringItem.getText() + URL);
                         image .setImage( loadImage(URL) );
                         stringItem.setText(stringItem.getText() + 8);
                         System.out.println("Thread3...");
                        //item.setImage(image);
                        //mItem.setLabel(mItem.toString());
                        //stringItem.setText(stringItem.getText() + ioe.getMessage());
                    } catch (Exception ex) {
                       stringItem.setText(stringItem.getText() + "Err1"+ex.getMessage());
                        System.out.println("ThreadError..."+ex.getMessage());
                    }
 
 
 
        } catch (Exception ex) {
            stringItem.setText(stringItem.getText()+"Error2 " + ex.getMessage());
        }
 
    }