Server.java import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.InetSocketAddress; import java.net.ServerSocket; import java.net.Socket; public class Server { public static void main(String[] args) throws IOException { ServerSocket server = new ServerSocket();//서버소켓 객체 생성. client의 접속..