How I'm support to run a server with a client in java?

[jin Otanashi]

As the question is asking above
I have this program for server:

public class ChatterServer {
public static void main(String [] args) throws Exception {
ServerSocket serverSocket = new ServerSocket(SERVER_PORT);
System.err.println("Waiting for a client");
Socket clientSocket = serverSocket.accept();
System.out.println("Connection requested from: " + clientSocket.getLocalAddress());
String myReply = "";
PrintWriter toClient = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader fromClient = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
String endstr = "end";
toClient.println("Whatcha want?");
String incoming = fromClient.readLine();
while(incoming.compareTo(endstr) != 0) {
System.out.println(incoming);
System.out.print("Your turn> ");
myReply = keyboard.readLine();
toClient.println(myReply);
if (myReply.compareTo(endstr) == 0)
incoming = endstr;
else
incoming = fromClient.readLine();
}
}
final static int SERVER_PORT = 3333;
}

and this one for client:

public class ChatterClient {
public static void main(String [] args) throws Exception {
Socket serverSocket = new Socket(args[0], SERVER_PORT);
String myReply="";
PrintWriter toServer = new PrintWriter(serverSocket.getOutputStream(), true);
BufferedReader fromServer = new BufferedReader(new InputStreamReader(serverSocket.getInputStream()));
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
String incoming = fromServer.readLine();
String endstr = "end";
while(incoming.compareTo(endstr) != 0) {
System.out.println(incoming);
System.out.print("Your turn> ");
myReply = keyboard.readLine();
toServer.println(myReply);
if (myReply.compareTo(endstr) == 0)
incoming = endstr;
else
incoming = fromServer.readLine();
}
}
final static int SERVER_PORT = 3333;
}

by the way I'm using eclipse.
when I run the server is fine but when run the client, its crash any idea why is not working ??

[Knute Snortum]

The only array retrieval is on line 3 of your posted client code, so I suspect that you're not passing an argument in.

[Knute Snortum]

In my version of Eclipse, you can add a program argument by creating a Run Configuration. Run -> Run Configurations..., select or create a configuration, click the Arguments tab.

[jin Otanashi]

 

Knute Snortum wrote:In my version of Eclipse, you can add a program argument by creating a Run Configuration. Run -> Run Configurations..., select or create a configuration, click the Arguments tab.

what I'm support to put on the argument tab, client?

[Knute Snortum]

Did you write this?

Socket serverSocket = new Socket(args[0], SERVER_PORT);

args is an array of argument that are usually passed from the command line. By looking at the documentation it seems you need an Internet address.

[jin Otanashi]

 

Knute Snortum wrote:Did you write this?

Socket serverSocket = new Socket(args[0], SERVER_PORT);

args is an array of argument that are usually passed from the command line. By looking at the documentation it seems you need an Internet address.

like this ?

I guess i need find IP using the command prompt

[Knute Snortum]

Yeah, but not "args", the IP address of the computer you're running the server on, don't you think?

[jin Otanashi]

 

Knute Snortum wrote:Yeah, but not "args", the IP address of the computer you're running the server on, don't you think?

you mean the IP numbers on the Arguments>

[jin Otanashi]

 

jin Otanashi wrote:

Knute Snortum wrote:Yeah, but not "args", the IP address of the computer you're running the server on, don't you think?

you mean the IP numbers on the Arguments>

got it and already fixed thank you so much

[Knute Snortum]

You're welcome.