I am trying to grab the temperature of St. Louis from

http://www.nws.noaa.gov/view/prodsByState.php?state=MO&prodtype=hourly

the line I get specifically is



My code originally was something like



what I expected:



however I get an array where several of the elements are whitespace

What I need is that 35, the first number that appears.

I am not the best with regex.

I have a feeling I am missing something here.

Any java folks know what is up?

edit: so I have been testing with rubular

and if I do



It seems to correctly return elements where the first element is the number I want, so I would imagine I could do str[0] and access it.

But instead I get

(as one line)

This post was edited by Eep on Nov 12 2014 03:15pm

Try crtLine.split(\\s+)

thank you, this worked.

Love you bae


Do you understand why this works and the other doesn't? That should 'be the take away

This post was edited by Minkomonster on Nov 12 2014 03:20pm

I think. it seems the .split() treats the regex quite literally?

so like, the way the string is formatted from the weather guys, there are several spaces between the PTSUNNY and the 35.

so I am guessing that for [_ _ _]

the /s would still capture

[_x_] where x is that white space in the middle. (because I only specified it to delimit on a single white space)

edit:

actually, it would catch

[xx_]

I believe

double edit:

I am still wrong.

There are 4 spaces between

the array shows 6 elements as white space

triple edit:

apparently there are 7 spaces, so 6 makes sense then (in the java console anyway it sees 6, I got 4 from jsp)

This post was edited by Eep on Nov 12 2014 03:35pm

Basically yes. The engine is splitting on each instance of the delimiter, in this case any whitespace. But because your input text contains consecutive whitespace, when it splits it will return empty characters.

The difference is that +, it tells it 1 or more . So now it will group all consecutive whitespace as a single delimiter and results in no whitespace being generated.