Thread: Getting an input from a difficult to read file

My question is:

Is it in any way, possible to go into a file and then when it comes to a line you specified it takes the input you want?

Like this:
192,160,2275,1,0,
|
I want this number.

How could i get that number?

The first 2 numbers at the example line could be 2 digits or 3 digits.
I am not a file I/O pro or something like that.



What needs to be done:
Read a file specified; (Not done)
Go to a specified line number; (Done)
go to the third number in the line; (Not done)
Read the number; (Not done)
Put the number in a IntList; (Done)



Could anyone please help me with opening the file and taking the 3rd number out?

Thanks in advance!

Niels

--- Update ---

I want the third number from the example! not the first one .

Since I dont know about the Pattern class (and no good tutorials on it imo) i would need to go to that line and go to the second comma and start reading untill i find another comma? how would you set that up? if i know this i could find how to open a file and a go to that number and start doing this code untill the file ends.

Could you tell me how i find these 2 commas? that would finish my whole post really .

btw this is not even homework... this is for timing in a program im making.

But if i make a pattern (what i just read about) then it doesnt work. So that leaves that option (it doesnt work because we need the number we are trying to find but we havent found it yet)
which leaves us at just the String class. Which im not going to dig in just yet. When i have more time ill try and finish this. Thanks for your help!

1) You can read in the entire file and save it, line by line, into a String array. This is rather simple and you should find plenty of tutorials on how to do this.
2) Then you can go to the desired line by indexing into the array
3) You can split the String using the "split(pattern)" method from the String class. For example split(",") will split into substrings devided by a ',' character.
4) Split returns an array, so you can simply take the 3rd entry from the splitted String.