Returns the fully qualified class name of the given class
but without any array prefix such as "[L";
or null if the given class is null;
or an empty string if the given class is a primitive array
which may be single or multiple dimensional.
Returns the enum constant of the specified Enum with the
specified ordinal() return value of the enum constant;
or null if no such enum constant exists.
Returns the enum constant of the specified Enum with the
specified toString() return value of the enum constant;
or null if no such enum constant exists.