import java.net.Socket;
import java.net.ServerSocket;
import java.io.*;

public class Server {

    private static final int port = 10000;

    public static void main(String args[]) {
        ServerSocket server = null;
        Socket socket = null;

        try{
            //ソケットの作成＆受信待機
            server = new ServerSocket(port);
            socket = server.accept();
            System.out.println(socket.getRemoteSocketAddress() + "に接続しました");

            //送信を読み取る
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            //読み取った内容を出力
            PrintWriter out = new PrintWriter(socket.getOutputStream(),true);
            String str;
            while((str = in.readLine()) != null){
                System.out.println("受信：" + str);
                out.println(str);
                System.out.println("送信：" + str);
            }
        }catch(IOException e){
            e.printStackTrace();
        }finally{
            try{
                if(socket != null) socket.close();
                if(server != null) server.close();
            }catch(IOException e){
                e.printStackTrace();
            }
        }
    }
}