Re: split() success

From:
Andy Flowers <no.way@hose.com>
Newsgroups:
comp.lang.java.help
Date:
Sun, 07 May 2006 08:55:51 GMT
Message-ID:
<rCi7g.2231$BD4.927@newsfe4-win.ntli.net>
Carramba wrote:

hi!

Iam trying to find out if split() command succeded, then I want to do
one thing in othercase print some error.
but have no luck

public void myFunction(String s){
    String[] x = null;
  try {
             x = s.split("=");
            }catch (PatternSyntaxException e1) {
                do_some_error_handling(); //never gets executet
            }
        no_error_function(); //executes enyway
}

how do I get this working?

________________________
Thanx in advance


split() will throw an exception if the pattern passed in as a parameter is incorrect, not if the data doesn't match the
pattern.

if there is not splitting being carried out then the return is one element, the string being split.

The API documents all of this.

As an aside no_error_function() will always be executed regardless of any exceptions as it it outside of the try catch
block.

You could try something like

   try
   {
     string[] x = s.split("=");
     if( x.length() > 1 )
     {
       // we split the input string into more than one item
       no_error_function();
     }
     else
     {
       // what do we want to do if there is no '=' in the input string ?
     }
   }
   catch (PatternSyntaxException e1)
   {
     do_some_error_handling(); //something wrong with the pattern passed to split, which will not be wrong in this case
   }
  }

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