/**
* Returns the index of the word which has the <var>lemma</var> or -1 if not found.
*
* @param lemma lemma to check
* @return true if <var>lemma</var> is one of the words contained in this synset
*/
public int indexOfWord(String lemma) {
if (null == lemma) {
throw new IllegalArgumentException(JWNL.resolveMessage("DICTIONARY_EXCEPTION_046"));
}
for (int i = 0; i < words.size(); i++) {
if (words.get(i).getLemma().equalsIgnoreCase(lemma)) {
return i;
}
}
return -1;
}
