Aleksei Vasiliev posted:

Aleksei Vasiliev posted:

I'm writing a really simple IRC bot just to learn poo poo and I'm trying to do something. I don't know what it's called. This is frustrating me. (i am bad at java/programming)

Strings have methods like contains and substring and poo poo, so I can do:

code:

BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
	String inputLine;
	while ((inputLine = br.readLine()) != null) {
		if (inputLine.contains("End of /MOTD")) {
			break;
		}
	}

but if I want to do poo poo like

code:

if (inputLine.isFrom("AlekseiV")) {
	//A message from the bot owner!
	doShit();
	}

how do I create the method isFrom() for strings? help
A tutorial or way of doing something similar or even just Google search terms would be great since I have no idea wtf this is called

LockeNess Monster posted:

How are IRC strings formatted? If the name of sender of message is always in front then you can just compare the beginning of inputLine with whatever poster name?

Also contains() should work fine for this. inputLine.contains("AlekseiV");

LockeNess Monster posted:

How are IRC strings formatted? If the name of sender of message is always in front then you can just compare the beginning of inputLine with whatever poster name?

Also contains() should work fine for this. inputLine.contains("AlekseiV");

quote:

:javamob!javamobi@hostname.com PRIVMSG #chatt :sup

Aleksei Vasiliev posted:

That's the bot with a nick of javamob saying "sup" in channel #chatt.

Just doing a contains will get false positives of anybody saying the bot owner's name.

edit: gently caress; beaten.

I've been using a bit of the RFC but also mostly just looking at the packets in Wireshark. My bot is poo poo and unreliable right now but I've only spent 30+ minutes on it so far.

I don't think I'll have that much problem getting the IRC stuff, but does anybody have an idea of how to do something like the isFrom() thing I'm thinking of?

Jonnty posted:

e: looking at the packets in wireshark seems like a pretty clunky way of doing it but whatever works for you. I prefer telnet because you get the plain text which you're dealing with and nothing else. You can also try sending strings too, which is either difficult or impossible with wireshark. Using wireshark lets you see the 'best practices' the clients use though, I guess.

quote:

:server.com NOTICE AUTH :*** Looking up your hostname...
:server.com NOTICE AUTH :*** Found your hostname
NICK javamob
:server.com 451 :You have not registered

Aleksei Vasiliev posted:

As far as I can tell you need to send the NICK command (which is the first client command) before it does any of that, which seems to be impossible using a telnet client.

epswing posted:

You could doesn't and take a look at how pircbot does things.

Partyworm posted:

code:

public String readThis() {
            try {
             if (buff.readLine() == null) {
		read.resetStream("johnny.txt");
                lineOut = buff.readLine();
            }
             else
		lineOut = buff.readLine();
		} catch (IOException io) {
			//do something
		} 
        return lineOut; 
        }

Could anyone shed some light on what logical flaw in the first method might explain the weird behavior?

lewi posted:

I assume that readLine() returns a line and then next time it is called it will return the next line? That would at least explain why the first line is not output as readLine() is called in the if statement, it is found not to be null, so else is executed which calls readLine() again. lineOut is then the second time that readLine() is called.

Step through your program line by line, writing down what happens (not what you think should happen, but what *actually* happens). That ought to help you fix your logical mistakes. You'll find out that your first method and your second method are not the same at all.

epswing posted:

This set of video tutorials is linked in the OP, check them out: http://sourceforge.net/projects/eclipsetutorial/files/

Internet Janitor posted:

WalltBeef: It's probably not the fastest solution, but if all you care about is 2d there's always the AWT Polygon class. Check out the contains() methods.

WalletBeef posted:

I am working on some code which needs to determine if a point on the earth is within a polygon. Are there java libraries which would allow me to do this?

Canine Blues Arooo posted:

One of the ways I thought that'd be cool to try was to store said data in an Xlsx file and read out of there. The advantage is that the data is much more organized and readable. The disadvantages include having to deal with excel every time I want to view the file among other things, but I figure it would be an opportunity to learn how to use a package in Java so I justify doing it by writing it up as a learning experience.

_areaman posted:

How can I make the server realize when a client has quit? It must be some type of check on the socket. I know I could ping each client, and any client that doesn't respond is disconnected, but isn't there an easier way?

Fitret posted:

...
it's not working:
...

rjmccall posted:

What are you expecting, some sort of "help I just caught on fire" packet? By definition, a client that goes down cannot tell you about it, because it's down. The only reasonable solution is to require periodic transmissions to keep the connection alive.

That said, you can get the TCP layer to do this for you; just set SO_KEEPALIVE on the socket (i.e. socket.setKeepAlive(true)).

Aleksei Vasiliev posted:

Yeah, either save every line of what your client is POSTing and what is returned, or somehow run a packet logger.

Oh, and try replacing the "/"s in __VIEWSTATE with "%2F" instead. Maybe for __EVENTVALIDATION too.

ynef posted:

tcpmon is quite good for this. You start it up, tell it to act as a proxy, it prints out both request and response. Simple and just what is most likely needed here.

The OP posted:

Also Bubblegum Wishes recommends this series of videos teaching Java from the ground up using Eclipse.

korofrog posted:

Hello all, I'm learning a bit of java and I'm trying to work on a personal project involving measurement conversion and I need some help with the logic and see if there's a way to simplify how I think it should be done.

Basically, I want to do some simple conversion of feet, meters, inches, and yards. What I'd like is to have four separate text fields and a single button and if I put a number into one field, it will calculate the other three fields after clicking the button.

My original thought is to check and see if x field != "", then it would call a conversion method and then populate the remaining fields. So I'm thinking at minimum there will be four if statements. Anyone have any better ideas or a link to a tutorial on what I'm trying to accomplish?

Jonnty posted:

probably just take the first filled one and ignore the rest