在eclipse

Question

我是服务器和客户端类的代码。我有两个类，ServerApp作为服务器，ClientApp作为本地计算机的客户端。

我首先运行ServerApp类，然后运行ClientApp类。在运行ClientApp类之后，我在eclipse控制台中编写了一些消息＆＃34; Hello Server＆＃34;然后在显示客户端消息的ServerApp控制台中打印消息。

但是，当我运行ServerApp类并在控制台中编写一些文本并运行ClientApp时，控制台中不会显示任何消息。

我无法理解如何在eclipse控制台中显示双向消息通信？请建议我如何在eclipse中执行双向通信（客户端服务器）。

服务器应用

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

public class ServerApp {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        try {
            ServerSocket Server_Socket;
            Server_Socket = new ServerSocket(5555);

            Socket clientSocket = null;
            clientSocket = Server_Socket.accept();

            DataInputStream input;
            input = new DataInputStream(clientSocket.getInputStream());
            System.out.println(input.readUTF());

            DataOutputStream output;
            output = new DataOutputStream(clientSocket.getOutputStream());

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            String str = "", str2 = "";
            while (!str.equals("stop")) 
            {
                str = input.readUTF();
                System.out.println("client says: " + str);
                str2 = br.readLine();
                output.writeUTF(str2);
                output.flush();
            }
            input.close();
            clientSocket.close();
            Server_Socket.close();

        } catch (Exception e) {
            System.out.println(e);
        }

    }

}

客户端应用

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

public class ClientApp {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        try {
            Socket Client_Socket;
            Client_Socket = new Socket("localhost", 5555);

            DataInputStream input;
            input = new DataInputStream(Client_Socket.getInputStream());

            DataOutputStream output;
            output = new DataOutputStream(Client_Socket.getOutputStream());

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            String str = "", str2 = "";
            while (!str.equals("stop")) {
                str = br.readLine();
                output.writeUTF(str);
                output.flush();
                str2 = input.readUTF();
                System.out.println("Server says: " + str2);
            }

            output.flush();
            output.close();
            Client_Socket.close();
        } catch (Exception e) {
            System.out.println(e);
        }

    }

}