Java APIs

Hi All,
I am developing a prototype which need do get some data from Java to VB application. I created server socket in java, My VB application is sending data to the same port what java is running.
The Java program able to recognized some data in coming to the port. but BufferedReader, readLine() not able to read the bytes. Please any one help me to resolve this problem.
Java Code :
public class KnockKnockServer {

public static void main(String[] args) throws IOException {

ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(4444);
} catch (IOException e) {
System.err.println("Could not listen on port: 4444.");
System.exit(1);
}

Socket clientSocket = null;
try {
clientSocket = serverSocket.accept();
} catch (IOException e) {
System.err.println("Accept failed.");
System.exit(1);
}

PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
try{
do{

String headerLine = in.readLine();
if(headerLine==null ||headerLine.equals("\r\n") ||headerLine.equals("") ||headerLine.equals("null")){ System.out.print("");
continue;
}else{
System.out.print(headerLine);
}

} while(true);
}catch(Exception e){
e.getStackTrace();
}


out.close();
in.close();
clientSocket.close();
serverSocket.close();
}
}

My VB code :
Winsock.Close

If Winsock.State = sckConnected Then
MsgBox "Connected with server"
End If
'Winsock.Protocol = sckTCPProtocol
Winsock.RemoteHost = "insgb0333"
Winsock.RemotePort = 4444
Winsock.Connect


If Winsock.State = sckConnected Then
MsgBox "Connected with server"
End If

Winsock.SendData "test"