/**
* Encodes the Strings and returns the number of characters in the two
* encoded Strings that are the same.
* <ul>
* <li>For Soundex, this return value ranges from 0 through 4: 0 indicates
* little or no similarity, and 4 indicates strong similarity or identical
* values.</li>
* <li>For refined Soundex, the return value can be greater than 4.</li>
* </ul>
*
* @param encoder
* The encoder to use to encode the Strings.
* @param s1
* A String that will be encoded and compared.
* @param s2
* A String that will be encoded and compared.
* @return The number of characters in the two Soundex encoded Strings that
* are the same.
*
* @see #differenceEncoded(String,String)
* @see <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/tsqlref/ts_de-dz_8co5.asp">
* MS T-SQL DIFFERENCE</a>
*
* @throws EncoderException
* if an error occurs encoding one of the strings
*/
internal static int difference(StringEncoder encoder, String s1, String s2)
{// throws EncoderException {
return(differenceEncoded(encoder.encode(s1), encoder.encode(s2)));
}