java.net.BindException: Address already in use: JVM_Bind

[khalid galal]

Hi, i am using NetBeans IDE 6.0.1 and i created a server project and a client project, first i run the server that listens to the port "8221" and waits for clients accessing that port, and when i run the client that accesses the server at port "8221" the IDE throws this exception
"Exception in thread "main" java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)"
By the way, i checked for any process using the same port in the command window by typing "netstat -a" and i didn't find any.

The server code:

try {
            ServerSocket server = new ServerSocket(8221);
            System.out.println("Waiting for clients\n");
            Socket connection = server.accept();
            ObjectInputStream input = new ObjectInputStream(connection.getInputStream());
            ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());
            StringBuffer buff = new StringBuffer();
            do {
                int c = 0;
                while (((c = input.read()) != '\n') || ((c = input.read()) != -1)) {
                    buff.append(c);                    
                }
                msg = buff.toString();
            } while (msg != "Exit");
            System.out.println(msg);
        } catch (IOException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
 

The client code:

try {
 
            Socket client = new Socket(InetAddress.getLocalHost(),8221);
            //Socket client = new Socket("192.168.1.18",8221);
            ObjectInputStream input = new ObjectInputStream(client.getInputStream());
            ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());
            String msg = "Hello Exit";
            output.writeBytes(msg);
//            StringBuffer buff = new StringBuffer();
//            do {
//                int c = 0;
//                while (((c = input.read()) != '\n') || ((c = input.read()) != -1)) {
//                    buff.append(c);
//                }
//                msg = buff.toString();
//            } while (msg != "Exit");
        } catch (IOException ex) {
//            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println(ex);
        }
 

Thanks.

[itsraghz]

That's because the Java program/process is still running. Did you abruptly shutdown your Netbeans IDE?

Try closing Netbeans and run the program again. It should work fine!