Infinite chatting application between server and client using socket programming

Question

I want to create an infinite chatting application i have written the code for just one message and i want to modify the code in such a way that there is infinite chatting between server and client but if client don't enter any message after 10 sec server should close its port and i don't how to do it anyone can please help me?

My server class

public class Server {

public static void main(String[] args) {
// TODO code application logic heretry{
try{
ServerSocket ss=new ServerSocket(6666);
Socket s=ss.accept();//establishes connection
DataInputStream dis=new DataInputStream(s.getInputStream());
DataOutputStream dout=new DataOutputStream(s.getOutputStream());

dout.writeUTF("Hello i am your Server");
String str=(String)dis.readUTF();
System.out.println("message= "+str);
ss.close();
}catch(Exception e){System.out.println(e);}
}
}