Method isNull

twitter4j-core/src/json/java/twitter4j/JSONArray.java:297–300

Returns true if this array has no value at index, or if its value is the null reference or JSONObject#NULL. @param index Which value to check. @return true if the value is null.

(int index)

     * @return true if the value is null.
     */
    public boolean isNull(int index) {
        Object value = opt(index);
        return value == null || value == JSONObject.NULL;
    }

    /**
     * Returns the value at {@code index}.