Thread: Java Chat Application

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  1. #1 Java Chat Application 
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    Firstly, I just want to say I know this isn't the most impressive thing but for me personally this is a big achievement and I'd like to share it here.

    This is the first time I've played around with Java networking.

    You can find the download here and try it out for yourself: https://github.com/Oogle-Boogle/ChatApplication/

    Spoiler for Client GUI:


    A preview of the server side

    Code:
    package Server;
    
    import Client.Client;
    
    import java.awt.*;
    import java.io.*;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    import static Client.Client.messageArea;
    
    public class Engine {
    
        ServerSocket server;
        Socket socket;
    
        BufferedReader br;
        PrintWriter out;
    
        int port = 7777;
    
        /**
         * Constructor..
         */
        public Engine() {
            try {
                System.out.println("Gets here");
                server = new ServerSocket(port);
                System.out.println("Server socket: " + server);
                while (true) {
                    socket = server.accept();
                    br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    out = new PrintWriter(socket.getOutputStream());
    
                    startReading();
                    startWriting();
    
                    System.out.println("Server has successfully loaded and is now ready to be connected to.");
                }
            } catch (Exception e) {
                System.out.println("Error loading the chat Engine.");
                e.printStackTrace();
            }
        }
    
        public void startReading() {
            Runnable read = () -> {
                System.out.println("Reader has started.");
                try {
                    while (true) {
                        String msg = br.readLine();
                        if (msg.equalsIgnoreCase("exit")) {
                            System.exit(0);
                        }
    //                    System.out.println("Server: " + msg + "\n");
                        messageArea.setAlignmentX(messageArea.RIGHT_ALIGNMENT);
                        messageArea.append("Server: " + msg + "\n");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            };
            new Thread(read).start();
        }
    
        public void startWriting() {
            System.out.println("Writer has started.");
            Runnable write = () -> {
                try {
                    while (!socket.isClosed()) {
                        BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
                        String content = br1.readLine();
    
                        out.println(content);
                        out.flush();
                        //Now lets close the socket if we type exit.
                        if (content.equalsIgnoreCase("exit")) {
                            socket.close();
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            };
            new Thread(write).start();
        }
    
        public static void main(String[] args) {
            System.out.println("The server is starting...");
             new Engine();
        }
    }
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    ╚╩╩╩╩╩╩╝
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  3. #2  
    Bossman

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    Hehe. Looks good man, good luck!
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  5. #3  
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    Quote Originally Posted by Oogle View Post
    Firstly, I just want to say I know this isn't the most impressive thing but for me personally this is a big achievement and I'd like to share it here.

    This is the first time I've played around with Java networking.

    You can find the download here and try it out for yourself: https://github.com/Oogle-Boogle/ChatApplication/

    Spoiler for Client GUI:


    A preview of the server side

    Code:
    package Server;
    
    import Client.Client;
    
    import java.awt.*;
    import java.io.*;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    import static Client.Client.messageArea;
    
    public class Engine {
    
        ServerSocket server;
        Socket socket;
    
        BufferedReader br;
        PrintWriter out;
    
        int port = 7777;
    
        /**
         * Constructor..
         */
        public Engine() {
            try {
                System.out.println("Gets here");
                server = new ServerSocket(port);
                System.out.println("Server socket: " + server);
                while (true) {
                    socket = server.accept();
                    br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    out = new PrintWriter(socket.getOutputStream());
    
                    startReading();
                    startWriting();
    
                    System.out.println("Server has successfully loaded and is now ready to be connected to.");
                }
            } catch (Exception e) {
                System.out.println("Error loading the chat Engine.");
                e.printStackTrace();
            }
        }
    
        public void startReading() {
            Runnable read = () -> {
                System.out.println("Reader has started.");
                try {
                    while (true) {
                        String msg = br.readLine();
                        if (msg.equalsIgnoreCase("exit")) {
                            System.exit(0);
                        }
    //                    System.out.println("Server: " + msg + "\n");
                        messageArea.setAlignmentX(messageArea.RIGHT_ALIGNMENT);
                        messageArea.append("Server: " + msg + "\n");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            };
            new Thread(read).start();
        }
    
        public void startWriting() {
            System.out.println("Writer has started.");
            Runnable write = () -> {
                try {
                    while (!socket.isClosed()) {
                        BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
                        String content = br1.readLine();
    
                        out.println(content);
                        out.flush();
                        //Now lets close the socket if we type exit.
                        if (content.equalsIgnoreCase("exit")) {
                            socket.close();
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            };
            new Thread(write).start();
        }
    
        public static void main(String[] args) {
            System.out.println("The server is starting...");
             new Engine();
        }
    }
    Love to see it, great way to start learning about Java networking - funnily enough, the same approach I took when I was first learning! Stay curious!
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  7. #4  
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    Quote Originally Posted by hc747 View Post
    Love to see it, great way to start learning about Java networking - funnily enough, the same approach I took when I was first learning! Stay curious!
    Going to look into Netty as a few people in discord told me I should do that instead of this just to make a more practical and more user friendly (something along those lines).
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  9. #5  
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    Quote Originally Posted by hc747 View Post
    Love to see it, great way to start learning about Java networking - funnily enough, the same approach I took when I was first learning! Stay curious!
    I remember getting on a call back in the day with you showing me it as well.
    Quote Originally Posted by MrClassic View Post
    Arham is the official thanker!
    List of my work here!
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  11. #6  
    L O S E Y O U R S E L F
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    Good on you bro, its still a great achievement and 99% of people wouldn't know where to start let alone have the patience to learn. Im sure you have a greater understanding of networking now, keep up little projects like this and you'll be surprised how far you will go.

    I personally loved the learning experience of network programming the most out of all the categories. Network and graphics programming my two favourites to learn.


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  13. #7  
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    Oogle i saw you were asking for project suggestions an another post. I have a suggestion for your next project. Make an application with as the back-end an OOP language such as Java or any language you desire. Have the front-end be web based. For example a while ago i made an application that uses as front-end and C#, AHK and Javascript as back-end
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  15. #8  
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    Looks nice! Keep it up, chat applications are always fun to make!
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  16. #9  
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    Thanks for posting Oogle.
    This could potentially be used for anything really if you think about it whether it being implemented with RSPS even though there is a chat system already, live support, in-game reporting, osgp buying/selling, secret staff conversations, erm... you get the picture. It is impressive - projects like this could go long ways. Keep at it and before you know it Bill Gates will be calling.
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