[SOLVED] remove all white space from text file

[loki]

Hi all

I'm new to this forum and pretty new to java in general.

I've got a question. Does anyone know how to remove all white space from a text file and i don't mean duplicate white space, i mean actually remove all spaces so there are none at all?

I hope that makes sense

Thanks

loki

[emceenugget]

what exactly do you need to know for this task? how to read/write a file? how to remove whitespace from a string? i'm sure you can google both and get answers quickly.

[xcallmejudasx]

If you read in a line from a text file you use the trim() method to remove leading and trailing white space.

[markw8500]

Check out RandomAccessFile... There is a setLength() method...

[Eranga]

You can do it in two ways. But the second way is not encourage to use.

Case 1:
Using regular expressions. Leading and trailing white spaces can be deleted using trim() method of the String class. To remove spaces in between you can use a regular expression.

Case 2:
Using StringTokernizer. This is straight forward. Tokernize the string based on space character. Then append each element in to the previous element and build the final string object.

[logicbug]

If I recall correctly, you can use the replaceAll method in the String class.
i.e myString.replaceAll(" ", "");

[emceenugget]

it might be more efficient to use a whitespace character in multiples "\\s+" or at least i think that is the right regex (never been good at it)

[logicbug]

yeah, that might work better, I've always found regular expressions to be highly irregular and genrally painful in the frontal lobe area. lol

[Eranga]

Actually regular expressions are more powerful, and easy to use, if you know how to use it correctly. And also, it's not easy to learn about regular expressions in a short period of time. But spending more time is not wasting at all.

[loki]

Hey guys thanks for the replies it's much appreciated!

I googled regular expressions like some of you said and found some useful info.

I tried to post the link to a website that i found, but the forum wouldn't let me as i've posted less than 20 posts.

Thanks again for the help

loki

[Eranga]

NP lol :) Just workout and see, how regular expressions are work and how far it's easy to work on.