笑傲Java面试：面霸修炼手册

v: ititit111222333

    public static boolean isEmpty(Collection coll) {
        return isNull(coll) || coll.isEmpty();
    }

    public static boolean isEmpty(Map map) {
        return isNull(map) || map.isEmpty();
    }

    public static boolean isEmpty(Object[] array) {
        return isNull(array) || array.length == 0;
    }

    public static boolean isNotEmpty(Object obj) {
        return !isEmpty(obj);
    }

    public static boolean isNotEmpty(CharSequence cs) {
        return !isEmpty(cs);
    }

    public static boolean isNotEmpty(Collection coll) {
        return !isEmpty(coll);
    }

    public static boolean isNotEmpty(Map map) {
        return !isEmpty(map);
    }

    public static boolean isNotEmpty(Object[] array) {
        return !isEmpty(array);
    }