Stream vs Write (Client-Server)

Question

Hi,
Ok, heres the problem, if someone can help me out it would be great! I am new to networking , and new to Java as well. I am trying to learn networking in Java by creating a simple Client-Server program.
Heres my Server :
import java.net.*;
import java.io.*;
public class MyServer {
     public static final int port = 8888;
     public static void main(String[] args) {
          ServerSocket serverSocket = null;
          Socket clientSocket = null;
          PrintStream os;
          try {
               serverSocket = new ServerSocket(port);
               System.out.println("Server initialized");
               System.out.println("Waiting for connection");
               clientSocket = serverSocket.accept();
               if(clientSocket.isConnected()) {
                    os = new PrintStream(clientSocket.getOutputStream());
                    os.print("Server: Connection established!");
          } catch (IOException e) {
               System.out.println(e);
               System.exit(1);
}Here's my Client:
import java.io.DataInputStream;
import java.io.PrintStream;
import java.net.*;
import java.io.*;
public class MyClient {
     public static final int port = 8888;
     public static void main(String args[]) {
          Socket clientSocket = null;
          DataInputStream is;
          try {
               clientSocket = new Socket("localhost", port);
               System.out.println("ClientSocket Initialized!");
               if (clientSocket.isConnected()) {
                    is = new DataInputStream(clientSocket.getInputStream());
                    String response;
                    while ((respon... [Show more]

Answer 1

thx for the reply jverd. I managed to get my Client Server working. Its basically like a chat now, client - server send messages back and forth, however, after they connect, only client can send messages, then after a little while only server can send messages, and this keeps looping. Any idea why? Heres my source:
Server:
import java.net.*;
import java.io.*;
import java.util.Scanner;
public class Server {
     public static final int port = 8888;
     public static void main(String[] args) {
          ServerSocket sSoc;
          Socket soc;
          PrintStream os;
          DataInputStream in;
          Scanner scanner;
          try {
               sSoc = new ServerSocket(port);
               soc = sSoc.accept();
               os = new PrintStream(soc.getOutputStream(), true);
               in = new DataInputStream(soc.getInputStream());
               System.out.println("Connection established! Initializing server");
               scanner = new Scanner(System.in);
               while(true) {
                    String outgoing, incoming;
                    outgoing = scanner.nextLine();
                    os.println(outgoing);
                    if(outgoing.equals("exit")) break;
                    if((incoming = in.readLine())!=null) {
                         System.out.println(incoming);
                    if(incoming.equals("exit")) break;
               in.close();
               out.close();
               soc.close();
               sSoc.close();
          } catch (IOException e) {
               System.out.println(e);
}Client
import java.net.*;
import java.io.*;
import java.util.Scanner;
public class Client {
     public static final int port = 8888;
     public static void main(String[] args) {
          Socket soc;
          PrintStream os;
          DataInputStream in;
          Scanner scanner;
          try {
               soc = new Socket("localhost", port);
               os = new PrintStream(soc.getOutputStream(), true);
               in = new DataInputStream(soc.getInputStream());
               System.out.println("Connection established! Initializing Client");
               scanner = new Scanner(System.in);
               while(true) {
                    String incoming, outgoing;
                    outgoing = scanner.nextLine();
                    os.println(outgoing);
                    if(outgoing.equals("exit")) break;
                    if((incoming = in.readLine())!=null) {
                         System.out.println(incoming);
                    if(incoming.equals("exit")) break;
               in.close();
               out.close();
               soc.close();
               sSoc.close();
          } catch (IOException e) {
               System.out.println(e);
}Edited by: b-2_spirit on Sep 21, 2010 10:41 PM
Edited by: b-2_spirit on Sep 21, 2010 10:42 PM