Unable to invoke servlet from client (simple java class)

Hi all,
I had written simple servlet and client.I am able to invoke servlet from browser and from JSP page.My servlet is not getting invoked from client (simple java program used URL).
-------------------------------------------------------
Here is my client code

public static void main(String[] args) {

try{

URL url = new URL("http://localhost:8080/B2BServer-war/B2BConnectorServlet");
           	URLConnection connection = url.openConnection();
        	connection.setDoOutput(true);
	        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());

/*Reading file  */
               FileInputStream inFile = new FileInputStream("c:/Jet/input/Amgen_7200142182.xml");
               StringBuffer buf = new StringBuffer();                
                int c;
                do {
                 c = inFile.read();
                 buf.append((char) c);
    } while (c != -1);

System.out.println(buf.toString());
        System.out.println("message in buffer is......."+ buf.toString());
        out.write(buf.toString());
	out.flush();
        out.close();

BufferedReader in = new BufferedReader(
				new InputStreamReader(
				connection.getInputStream()));

System.out.println("Respnose dataa....." );
        String string;
        while ((string = in.readLine()) != null) {

System.out.println(string);

}
        }catch(Exception e){
            System.out.println(e.getMessage());
        }
    }

Thanks in advance to all

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How are you invoking it from the browser? I would have thought you'd have to give it a parameter name.

hi david,
I am simply placing this URL in browser(address bar)

http://localhost:8080/B2BServer-war/B2BConnectorServlet

Sekhar,
Could you explain bit more about your servlet, like what kind of input your servlet would expect from the client? and expected response?. As per the client code you have written, it looks to me that the servlet is expecting "File" kind of input from the client, but in your reply to Davit you mentioned that you have just pasted the URL in browser, this is totally confusing me.

Explain your expected servlet input/output in detail.

Katty Knk wrote:Sekhar,
Could you explain bit more about your servlet, like what kind of input your servlet would expect from the client? and expected response?. As per the client code you have written, it looks to me that the servlet is expecting "File" kind of input from the client, but in your reply to Davit you mentioned that you have just pasted the URL in browser, this is totally confusing me.

Explain your expected servlet input/output in detail.

Refer this link, i hope this would give you more detail.

well, basically it wont trigger the URL, it create the connection.

to make a request you need to do this

seetharaman venkatasamy wrote:to make a request you need to do this "connection.getInputStream();"

... which is what the code is doing in line 29.

So the response from the server is completely empty, and the servlet's doPost method is not called?

Ulf Dittmer wrote:... which is what the code is doing in line 29.

i miss that Completely