echoserver1.java

java socket服务器端程序样例

import java.io.*;
import java.net.*;

public class EchoServer1
{ public static void main(String[] args )
 { try {
        ServerSocket s = new ServerSocket(8500);
        Socket incoming = s.accept( );
        BufferedReader in = new BufferedReader
         (new InputStreamReader(incoming.getInputStream()));
        PrintWriter out = new PrintWriter
         (incoming.getOutputStream(), true /* autoFlush */);

        out.println( "Hello! Enter BYE to exit." );

        boolean done = false;
        while (!done)
          { String line = in.readLine();
            if (line == null) done = true;
            else
            { out.println("Echo: " + line);

            if (line.trim().equals("BYE"))
            done = true;
            }
          }
incoming.close();
}
catch (Exception e)
{ System.out.println(e);
}
}
}