[SOLVED] Chat Application question

ChrisMayhew · #1 (**permalink**) 01-09-2009, 01:10 PM

Hello again

Im still working on my chat application, So far i have managed to get it to ask the server for a list of users and a list of channels however I have run into an issue with once a user has done one command say /ShowUsers i made it ask for a second command but it will not show them. I know pretty much why and its because the if statements are above the second command.

So my question is how do i make the client ask for a command and run the if statements then go back to asking for a command... If you get me

I have attached my client code.. I have more than likely made it more complex than it needs to be but im very new to java to be taking on such a project. lol

Code:

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.rmi.*;
//import java.rmi.server.RemoteServer;

public class RMIClient {

    public static void main(String[] args) {
        try
        {

            RemoteServer CS=(RemoteServer) Naming.lookup("rmi://192.168.1.103/ChatServer");
             
            System.out.println("Please enter a Username: ");
            BufferedReader Login = new BufferedReader(new InputStreamReader(System.in));
            String LoginName = null;
            LoginName = Login.readLine();

            InetAddress thisIp = InetAddress.getLocalHost();
            String IPAddress = thisIp.getHostAddress();

            CS.GetLoginName(LoginName, IPAddress);

            System.out.println("Command: ");
            BufferedReader Command = new BufferedReader(new InputStreamReader(System.in));
            String NxtCmd = null;
            NxtCmd = Command.readLine();

            if (NxtCmd.equals("/ShowUsers")) {
                String [] OnlineUsers = CS.getUsersOnline();
                int UOCount = OnlineUsers.length;

                int CountUsers = 0;
                int UserCount = 0;
                while (CountUsers < UOCount) {
                    if (OnlineUsers[CountUsers] != null) {
                        UserCount++;
                    }
                CountUsers++;
                }
                int i = 1;
                System.out.println("Username \t Channel");
                System.out.println("-------- \t ---------");
                while (i <= UserCount) {
                    String [] temp = null;
                    temp = OnlineUsers[i].split(";");
                    //if (OnlineUsers[i] != null ) {
                        int ChannelI = 1;
                        int ChannelCount = CS.ChannelCount();
                        String [] ChatChannels = CS.getChannels();

                        int[] UserChanNum = CS.getUsersChannels();
                        String UserChan = null;

                        while(ChannelI <= ChannelCount) {
                            if (ChannelI == UserChanNum[ChannelI]) {
                                UserChan = ChatChannels[ChannelI];
                            }
                        ChannelI++;
                        }
                        int NameLen = temp[0].length();
                        
                        if(UserChan == null) {
                        System.out.println(temp[0] + "\t" + "No Channel");
                        } else {
                        System.out.println(temp[0] + "\t" + UserChan);
                        }
                        UserChan = null;
                    //}
                
                i++;
                }
            } else if (NxtCmd.equals("/ShowChannels")) {
                int ChannelI = 1;
                int ChannelCount = CS.ChannelCount();
                String [] ChatChannels = CS.getChannels();
                System.out.println("Channel   \t Online");
                System.out.println("----------------   ---------");
                while (ChannelI <= ChannelCount) {
                System.out.println(ChatChannels[ChannelI]);
                ChannelI ++;
            }
            }
            System.out.println("Command: ");
            NxtCmd = Command.readLine();
        }
        catch ( Exception e )
        {
            System.out.println("Exception: " + e.getMessage());
        }
    }

}

Any help would be great.
I assume it has to go into its own class or something?

ChrisMayhew · #2 (**permalink**) 01-09-2009, 03:29 PM

I have kinda figured out what i need to do i think. Within my client server code i created a SCommands(String NxtCmd) and copied all my if (NxtCmd) commands into that. However the CS.GetChannels etc get an error saying:

Quote:

cannot find symbol
symbol: method getUsersOnline()
location: class CS

I assume this is because the code is now above the main or the CS storing the connection to the server isn't accessible to the SCommands() part.
Any idea how i can make the CS available to everything within the code and not just main?

Thanks

ChrisMayhew · #3 (**permalink**) 01-09-2009, 05:11 PM

Just to update, playing about myself I have managed to make CS available to the whole code in the client so I have no separated my main functions like the commands to send to the server and getting the username from the user.

The only thing I am stuck on if anyone can help is making it so that the server will keep asking the user for commands until the issue the command /Quit I have the code to quit already in place but I need it to keep asking the user for commands.

Any help would be great!

Thanks