Hi, I made Client/Server program. The structure of my code is like below... First, client sends request to the server... Second, server receives the request and check the server status for the request. Third, server sends reply to the client Fourth, client receives the reply from the client. so on.... The problem is in fourth step. In the third step, server just use writeInt(code) and client use readInt().... Sometimes, client's code,'readInt()' throws EOFException. This is when multiple clients request server. I cannot figure this out....so anyone can help me???