I have just started learning java. I modified the client side code for a server/client communication program, by creating two threads for the client side, main thread for receiving user's input, and inputThread for receiving server's response. I am sure that server has sent the response to client, however, no response message is obtain at client.

Here is my code. Can anyone help me to figure it out? Thanks

```
package clientnio;

import java.net.*; 
import java.nio.*; 
import java.io.*;
import java.nio.channels.*; 
import java.util.Scanner; 

public class ClientNIO {
public static int bufferLen = 50;
public static SocketChannel client;
public static ByteBuffer writeBuffer;
public static ByteBuffer readBuffer;

public static void main(String[] args) { 
    writeBuffer = ByteBuffer.allocate(bufferLen);
    readBuffer = ByteBuffer.allocate(bufferLen);

    try { 
        SocketAddress address = new InetSocketAddress("localhost",5505); 
        System.out.println("Local address: "+ address);
        client=SocketChannel.open(address);
        client.configureBlocking(false); 

        //readBuffer.flip();
        new inputThread(readBuffer);

        /*
        String a="asdasdasdasddffasfas"; 
        writeBuffer.put(a.getBytes()); 
        writeBuffer.clear();  
        int d=client.write(writeBuffer);
        writeBuffer.flip();
        */

        while (true) {
            InputStream inStream = System.in;
            Scanner scan = new Scanner(inStream);
            if (scan.hasNext()==true) {
                String inputLine = scan.nextLine();
                writeBuffer.put(inputLine.getBytes()); 
                //writeBuffer.clear();
                System.out.println(writeBuffer.remaining());
                client.write(writeBuffer);
                System.out.println("Sending data: "+new String(writeBuffer.array()));
                writeBuffer.flip(); 
                Thread.sleep(300);
            }
        }                 
    } 
    catch(Exception e) { 
        System.out.println(e);
    } 

}
}

class inputThread extends Thread {
private ByteBuffer readBuffer;
public inputThread(ByteBuffer readBuffer1) {  
    System.out.println("Receiving thread starts.");
    this.readBuffer = readBuffer1;
    start();
}

@Override
public void run() {
    try {
        while (true) {
            readBuffer.flip();
            int i=ClientNIO.client.read(readBuffer); 
            if(i>0) { 
                byte[] b=readBuffer.array(); 
                System.out.println("Receiving data: "+new String(b)); 
                    //client.close(); 
                    //System.out.println("Connection closed."); 
                    //break; 
            }
            Thread.sleep(100); 
        }
    }
    catch (Exception e) {
       System.out.println(e);
    }
  }
}

```