List Find

Posted on 2002-06-24
Last Modified: 2010-03-31
Hi Everyone,

  Ok, so I am pulling a String from a database field, that is a comma-delminated list.  It's a list of zip codes... so for instance "00101, 44303, 55101".  I need a way to find if a zip is in that list.

So with the above list, if I searched for 44303, it would come back true, but if I search the above list for 55555, it would come back false.

  I just need to know how to search through that list.
Like in ColdFusion you would just go:

ListFind(list, valueToSearchFor, delimeter)

Something along the same lines as that.

Any ideas?

Question by:bptacek
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LVL 33

Expert Comment

ID: 7105170
how about indexOf ?

String zips = "00101, 44303, 55101";

if ( zips.indexOf("44303,") >= 0 )
  return true;
  return false;
LVL 33

Expert Comment

ID: 7105176
so, a function to do this:

boolean zipExists(String zipToFind, String zipList)
   if ( zipToFind==null || zipList==null )
      return false;

   if ( zipList.indexOf(zipToFind+",") >= 0 )
      return true;
      return false;

boolean rc = zipExists( "44303", "90210, 44303, "54321" );
LVL 33

Accepted Solution

knightEknight earned 50 total points
ID: 7105178
hmm, maybe you don't need to look for the comma (in case it is at the end of the list)

if ( zipList.indexOf(zipToFind) >= 0 )

Author Comment

ID: 7105207
Ok, I am checking it out right now.


Author Comment

ID: 7105236
That will do it sir! Thanks, here's your points.


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