A simple java socket client @ 自由手記

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package com.rga.vzw;

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import java.io.BufferedReader;

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import java.io.IOException;

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import java.io.InputStreamReader;

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import java.io.PrintStream;

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import java.net.Socket;

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import java.net.UnknownHostException;

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import java.util.Date;

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public class EchoClient {

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    public static void main(String[] args) throws IOException {

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        System.out.println("EchoClient.main()");

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        Socket echoSocket = null;

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        PrintStream out = null;

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        BufferedReader in = null;

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        try {

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            echoSocket = new Socket("localhost", 38300);

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            out = new PrintStream(echoSocket.getOutputStream());

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            in = new BufferedReader(new InputStreamReader(

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                    echoSocket.getInputStream()));

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        } catch (UnknownHostException e) {

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            System.err.println("Don't know about host: localhost.");

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            System.exit(1);

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        } catch (IOException e) {

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            System.err.println("Couldn't get I/O for "

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                    + "the connection to: localhost.");

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            System.exit(1);

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        }

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        BufferedReader stdIn = new BufferedReader(new InputStreamReader(

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                System.in));

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        // String userInput;

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        System.out.println("connected!!");

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        int counter = 0;

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        // TODO monitor

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        while (true) {

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            counter++;

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            // out.println(counter);

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            if (counter % 1000 == 0) {

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                out.println("update" + new Date().getSeconds());

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                counter = 1;

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                System.out.println("echo: " + in.readLine());

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            }

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        }

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    }

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}