Writng a text file from the PC to a Unix/Solaris Server

Hello,
The PC and the Unix Server are in the same network.
In the server I have a directory /MyData/Test  
created.
All I am trying to do is to write a file of test data into the /MyData/Test directory.
I am using the URL class. But seems does nto work. Here is the code

import java.net.*;
import java.io.*;

public class DownloadFile
{public static void main(String [] args)
 {
  String theURL = "http://999.999.999.99/MYDIR/data/test.dat";

  String aTest = "Testing Some Data";
  byte byteBuffer[] = aTest.getBytes();
        

  try{//establish a connection
      URL sourceURL = new URL(theURL);
      URLConnection connection = sourceURL.openConnection();
      connection.connect();
      //if the files does not exist, the following will throw an exception
      OutputStream out = connection.getOutputStream();
      //read it
      out.write(byteBuffer);
     }
    catch(Exception ex){       System.out.println("Couldn't open the specified files");
                    System.out.println("Bye!");
                    System.exit(1);
       }
 
 }
}

Any Ideas?. I am not writing the actual IP address and showing a fake one 999.999.999.99