public interface Compare {

    /**
     * doCompare
     *
     * @param  obj1 first object to compare.
     * @param  obj2 second object to compare.
     * @return -1 if obj1 < obj2, 0 if obj1 == obj2, 1 if obj1 > obj2.
     */
    public int doCompare(Object obj1, Object obj2);

}
