Reading and skipping blank line from a file...

[Gabriele]

Hi all,
first I'd like to thank Mike for the help with the last post ;-)

Then here I go with the next problem :-)
Now I know How read the whole content of a text file and store it
into a variable. But what I should do is while reading the file, skip all
the blank line in it. Ex:

This is text


Text again.

How to skip the blank line between the Text ?
I have just switched from perl to Java so I'm not enought experienced.

Thank for your Help,
Gabriele

[Paul Clapham]

> Now I know How read the whole content of a text file and store it
> into a variable. But what I should do is while reading the file, skip all
> the blank line in it. Ex:
>
> This is text
>
>
> Text again.
>
> How to skip the blank line between the Text ?
> I have just switched from perl to Java so I'm not enought experienced.
>
It doesn't matter what language you're using, first you have to design the
program. Your design is something like:

Read a line.
If the line isn't blank, write it out (or add it to the block that you will
output later).

So I think your question is now: How do I tell if a string is blank?

Do you have the Java documentation? If you don't, you need to download it
from http://java.sun.com/products/jdk/1.2/download-docs.html. Then if you
look in the documentation for the String class, you'll find a method called
"trim" that removes whitespace from a string. A string is blank if there's
nothing left when you remove the whitespace. How do you tell if there's
nothing left? Well, if the length is zero. So:

if (yourString.trim().length() != 0) then...