import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class DownFile {
    final int BUFFER_SIZE=1024;
    public void saveToFile(String downUrl,String filePath)
    {
       
        HttpURLConnection connect=null;
        BufferedInputStream in=null;
        FileOutputStream file=null;
        byte[] buf=new byte[BUFFER_SIZE];
        int size=0;
       
        try {
               URL url=new URL(downUrl); 
               connect=(HttpURLConnection) url.openConnection();
               connect.connect();  
               in=new BufferedInputStream(connect.getInputStream());

               file=new FileOutputStream(filePath);

               while((size=in.read(buf))!=-1)
               {
                   file.write(buf,0,size);
               }          
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }catch (IOException e) {
            e.printStackTrace();
        }finally
        {
            try {
                  file.close();
                  in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            connect.disconnect();
        }
       
    }
    public static void main(String[]args){
        DownFile d= new DownFile();
        d.saveToFile("    }
}