I have created a CLI system that should allow multiple users to communicate with one another using the client, but I am unable to run multiple clients on the console. I really need help to fix this.
#Java CLI system not allowing me to open multiple clients on Eclipse IDE
orchid cloak
solemn flareBOT
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high sigil
you entered hi but the program expected an int
orchid cloak
How do I open multiple clients?
orchid cloak
How would I do that?
package client;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
try (Socket socket = new Socket("localhost", 1000)) {
PrintWriter output = new PrintWriter(socket.getOutputStream(), true);
Scanner scanner = new Scanner(System.in);
String msg;
String clientName = "unknown";
ClientRunnable clientRun = new ClientRunnable(socket);
new Thread(clientRun).start();
do {
if (clientName.equals("unknown")) {
System.out.print("Enter your name: ");
msg = scanner.nextLine();
clientName = msg;
output.println(msg);
if (msg.equals("exit")) {
break;
}
}
else {
msg = scanner.nextLine();
if (msg.equals("exit")) {
output.println("exit");
break;
}
System.out.println("1. Broadcast");
System.out.println("2. Private");
int type = scanner.nextInt();
scanner.nextLine();
if(type == 1){
output.println(clientName+": " + msg+"$b");
}
else if(type == 2){
System.out.print("Enter Recevier ID: ");
String ID = scanner.next();
output.println(clientName+": " + msg+"$"+ID+"$p");
}
}
} while (!msg.equals("exit"));
} catch (Exception e) {
System.out.println("Error [Client]: " + e.getMessage());
e.printStackTrace();
}
}
}
This is the code for the Main java file
Sorry I'm new to Java, and I've tried to google all of this but can't seem to find any solutions
bright latch
package client;
import java.io.BufferedReader;
import java.io.InputStreamReader...
what is the exact functionality you are looking for? multiple client on the console doesn't seem possible
each client has their own console, the server has it's own console
orchid cloak
I think I figured it out
But the functionality of my code is weird, I have to write out the message before I choose whether I want to broadcast it or pm it
Can I change that to be the other way around?
solid saffron
yeah, just rearrange your logic flow
orchid cloak
done thanks
solemn flareBOT
done thanks
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orchid cloak
i need help with this part
`package client;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
try (Socket socket = new Socket("localhost", 1000)) {
PrintWriter output = new PrintWriter(socket.getOutputStream(), true);
Scanner scanner = new Scanner(System.in);
String msg = null;
String clientName = "unknown";
ClientRunnable clientRun = new ClientRunnable(socket, output);
new Thread(clientRun).start();
boolean broadcasting = true;
while (true) {
if (clientName.equals("unknown")) {
System.out.print("Enter your name: ");
msg = scanner.nextLine();
clientName = msg;
output.println(msg);
if (msg.equals("exit")) {
break;
}
} else {
if (broadcasting) {
System.out.println("1. Broadcast");
System.out.println("2. Private");
System.out.println("3. Exit");
int type = scanner.nextInt();
scanner.nextLine();
if (type == 2) {
System.out.print("Enter Receiver ID: ");
String ID = scanner.next();
scanner.nextLine();
System.out.print("Enter message: ");
msg = scanner.nextLine();
if (msg.equals("exit")) {
output.println("exit");
break;
}
output.println(clientName + ": " + msg + "$" + ID + "$p");
broadcasting = true;
} else if (type == 3) {
output.println("exit");
break;
} else {
broadcasting = false;
}
}
System.out.print("Enter message: ");
msg = scanner.nextLine();
if (msg.equals("exit")) {
output.println("exit");
break;
}
output.println(clientName + ": " + msg + "$b");
broadcasting = true;
}
}
} catch (Exception e) {
System.out.println("Error [Client]: " + e.getMessage());
e.printStackTrace();
}
}
}
`
i am getting an error with this line
ClientRunnable clientRun = new ClientRunnable(socket, output);
this is my clientrunnable code
`package client;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.HashSet;
public class ClientRunnable implements Runnable {
private Socket clientSocket;
private HashSet<String> names;
private BufferedReader input;
public ClientRunnable(Socket clientSocket, HashSet<String> names) {
this.clientSocket = clientSocket;
this.names = names;
}
public void broadcastNewUser(String name) {
for (String user : names) {
if (!user.equals(name)) {
try {
PrintWriter writer = new PrintWriter(clientSocket.getOutputStream(), true);
writer.println(user + " has joined the chat");
} catch (Exception e) {
System.out.println("Error broadcasting new user: " + e.getMessage());
}
}
}
}
public void broadcastUserLeft(String name) {
names.remove(name);
for (String user : names) {
try {
PrintWriter writer = new PrintWriter(clientSocket.getOutputStream(), true);
writer.println(name + " has left the chat");
} catch (Exception e) {
System.out.println("Error broadcasting user left: " + e.getMessage());
}
}
}
@Override
public void run() {
try {
input = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String line;
String name = null;
while ((line = input.readLine()) != null) {
if (name == null) {
name = line;
names.add(name);
broadcastNewUser(name);
} else {
if (line.startsWith("exit")) {
broadcastUserLeft(name);
break;
} else {
System.out.println(line);
}
}
}
} catch (Exception e) {
System.out.println("Error [ClientRunnable]: " + e.getMessage());
} finally {
try {
clientSocket.close();
} catch (Exception e) {
System.out.println("Error closing client socket: " + e.getMessage());
}
}
}
}`