public static boolean checkType(Object item) {
        return item == null
            || item instanceof String
            || item instanceof Integer
            || item instanceof Long
            || item instanceof Double
            || item instanceof Boolean
            || item instanceof BigInteger
            || item instanceof BigDecimal
            || item instanceof JsonObject
            || item instanceof JsonArray;
    }
public static boolean checkType ( Object item ) { return item == null || item instanceof String || item instanceof Integer || item instanceof Long || item instanceof Double || item instanceof Boolean || item instanceof BigInteger || item instanceof BigDecimal || item instanceof JsonObject || item instanceof JsonArray ; }
Helper method to check if the given item is a supported JSON item.

@param item the value to check.
@return true if supported, false otherwise.