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Regex Program

Srinivas Katta
Ranch Hand

Joined: Feb 01, 2007
Posts: 76
Hi,

I have executed the below Program from K&B

And the command line:
java Regex2 "\d*" ab34ef

My assumption is that the output would be 0123445 but the actual output displayed is 01234456. I do not understand how?

Thanks
Srinivas
Christophe Verré
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Joined: Nov 24, 2005
Posts: 14688
    
  16

Check this FAQ.


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Sahil Kapoor
Ranch Hand

Joined: Sep 12, 2009
Posts: 316
\d* eseentially implies zero or more numeric digits.

Zero length match can occur in several places and one out of it is

After the last character of source data. in your example 6 !!!

See pg 500 in K&B !!!


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It is sorta covered in the JavaRanch Style Guide.
 
subject: Regex Program