java socket i/o 服务器通讯

Question

最近要做个服务器端的socket程序，想问下如果第一次客户端访问后，然后下次在客户端不访问的情况下可不可以由服务器向该客户端发送信息？？
服务端代码：
public class IOServer {
    public static final int RECEIVE_PORT = 3782;//服务器的端口号
    public ServerSocket socket;

    public IOServer() {
        try {
            socket = new ServerSocket(RECEIVE_PORT);
            Runnable task = new Runnable(){
                public void run(){
                    while(true){
                        DataInputStream in = null;
                           DataOutputStream out = null;
                           Socket clientRequest = null;
                           String inString;
                           String outString;
                        try {
                            clientRequest = socket.accept();//用户连接的通信套接字
                               in = new DataInputStream(clientRequest.getInputStream());
                               out = new DataOutputStream(clientRequest.getOutputStream());  
                               inString = in.readUTF();
                               outString = new Manager().doSomeThing(inString);
                               out.writeUTF(outString);
                               in.close();
                               out.close();
                               clientRequest.close();
                           }
                           catch (Exception e) {
                               e.printStackTrace();
                           }
                    }
                }
            };
            new Thread(task).start();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String args[]) {
        new IOServer();
    }
}

如果可以的话服务器端和客户端都该怎么写代码？？

Answer 1

最近要做个服务器端的socket程序，想问下如果第一次客户端访问后，然后下次在客>>户端不访问的情况下可不可以由服务器向该客户端发送信息？？

做程序..先要学会把问题说清楚..

网上有很多练习用的 聊天室 程序.. 仔细看看源码..就能解决你的问题..