Someone

//package mtrn;
import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientThreadedRandomNumberApplication2 {

	String randomNumber;
	String Sum;
	Socket clientsocket = null;
	long timeval1=0;
	long timeval2=0;double Time;
	int sum = 0;

	public void My_main() {
		
		String Server_IP = "127.0.0.1";	//Server IP
		int Port = 2001;				//Server Port listening to thread 1
		
		try {
				// Construct client's socket
				clientsocket = new Socket(Server_IP, Port);
				System.out.println("Server Port: "+clientsocket.getPort());
				System.out.println("Now go to server and press ENTER");
				
				// the buffer used for reading strings from the socket
				BufferedReader buf = null;
				buf = new BufferedReader(new InputStreamReader(clientsocket. getInputStream())); //buf needed later on
				
				while (true){
					if (buf.readLine().equals("GO")){ // Receive "GO" command from the server
						break;
					}
				}
			
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		timeval1 = System.currentTimeMillis();
		for (int i=0;i<10000;i++){
			randomNumber = getRandomNumberFromServer();
		}
		timeval2=System.currentTimeMillis();
		//Time=(timeval2-timeval1)/1000;
		Time=(timeval2-timeval1);
		System.out.println("Sum: "  + sum + ", Time Elapsed: " + Time);

	}
//---------------------------------------------------------------------------
	
	String getRandomNumberFromServer(){
		
		try {
			
			BufferedReader buf = null; 
			PrintWriter out = null; 
			//	 the buffer used for writing/reading strings from/to the socket
			buf = new BufferedReader(new InputStreamReader(clientsocket. getInputStream())); 
			out = new PrintWriter(clientsocket.getOutputStream(), true); 
			out.println("1"); // Send "1" to server to request random number
			randomNumber=buf.readLine(); // read random number from server
			sum=sum+Integer.parseInt(randomNumber.substring(0,1));
			Sum=String.valueOf(sum);
		}
		catch (Exception e){
			System.err.println("No server");
		}
		
		return randomNumber;
		
	}
	
	public static void main(String[] args) {

		ClientThreadedRandomNumberApplication2 ctia = new ClientThreadedRandomNumberApplication2();
		ctia.My_main();
		
	}

}