The util package These topics cover the classes for the util package. The util.Date classThe util.Date class provides DATE data-type related utility methods.The util.Datetime classThe util.Datetime class provides DATETIME data-type related utility methods.The util.Integer classThe util.Integer class provides INTEGER data-type related utility methods.The util.Interval classThe util.Interval class provides INTERVAL data-type related utility methods.The util.Strings classThe util.Strings class provides STRING data-type related utility methods.The util.Math classThe util.Math class provides basic mathematical functions based on floating point numbers (FLOAT).The util.JSON classThe util.JSON class provides a basic interface to convert program variable values to/from JSON data.The util.JSONObject classThe util.JSONObject class provides methods to handle an structured data object following the JSON string syntax.The util.JSONArray classThe util.JSONArray class provides methods to handle an array of values, following the JSON string syntax.