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NumberFormatException using line.substring

Tim Hollis
Greenhorn

Joined: Mar 18, 2003
Posts: 1
I need to check if a particular point in a sting "line" has any value in it or not. I know that the string will be composed of numbers, so
I have tried using :

I know that this is an awkward way of doing this, and it doesn't work! If the string is empty by the time I get to this point, I get a NumberformatException error.
Can anyone suggest a way I can check if a substing is not null? This HAS GOT to be simple!?!
Gyula Klinszky
Greenhorn

Joined: Jan 20, 2003
Posts: 27
Try checking the length of said string !
Layne Lund
Ranch Hand

Joined: Dec 06, 2001
Posts: 3061
You should break each function call into its own line. This would help simplify things drastically.
HTH
Layne


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William Barnes
Ranch Hand

Joined: Mar 16, 2001
Posts: 986

Ya, what Layne said.


Please ignore post, I have no idea what I am talking about.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: NumberFormatException using line.substring