Boyer 1.5

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  Fast string search (indexOf) using the Boyer-Moore
algorithm. Incorporate this class into your own Java
programs to rapidly search strings.

use:
import com.mindprod.Boyer.Boyer;
...
Boyer b = new Boyer( dogcatwombat );
int where = b.indexOf( cat );
or
int where = Boyer.indexOf( dogcatwombat , cat );

Boyer-Moore is about twice as fast as String.indexOf when
the string you are searching in is 2K or over and the
pattern you are searching for is 4 characters or longer.

String.indexOf is particularly slow when the pattern begins
with a common letter such as e . Boyer-Moore is fastest
when the pattern is long and composed only of uncommon
letters, e.g. z or ^ . If you use a char[] instead of
String for your text to be searched, it will run an
additional 33% faster.

Boyer automatically reverts to String.indexOf when that
would be faster.