文字列で、正規表現に一致した部分を配列で取得するには…

public static final String[] getSplitter( String str, String splitterRegex ){

	Pattern pattern = Pattern.compile(splitterRegex);

    return getSplitter(pattern, str);

}



private static String[] getSplitter(Pattern pattern, CharSequence input) {

    int index = 0;

    ArrayList<String> matchList = new ArrayList<String>();

    Matcher m = pattern.matcher(input);



    // Add segments before each match found

    while(m.find()) {

        matchList.add(m.group());

        index = m.end();

    }



    // If no match was found, return this

    if (index == 0)

        return new String[0];



    // Construct result

    int resultSize = matchList.size();

    while (resultSize > 0 && matchList.get(resultSize-1).equals(""))

        resultSize--;

    String[] result = new String[resultSize];

    return matchList.subList(0, resultSize).toArray(result);

}