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public class sample {

    static List<String> values = Arrays.asList("test","best","crest","zest","testy","tether","temper","teat","tempest");

    /**
     * @param args
     */
    public static void main(String[] args) {

        String queryStr="te*t";
        queryStr= queryStr.replaceAll("\\*", "\\\\w*");
        //To use other than alphanumeric characters, use
        //("\\*", ".*")
        System.out.println(queryStr);
        System.out.println(query(queryStr));

    }

    public static Collection<String> query(String queryStr) {
        List<String> list = new ArrayList<String>();
    for (String str : values) {
        if (str.matches(queryStr))
            list.add(str);
    }
    if (list.isEmpty())
        return null;
    else
        return list;
}

}