Statements using the ________ class are explicit conversions.

A(n) ___________________ method is a method that calls itself.

Fill in the blank(s) with the appropriate word(s).

__________ are used to match specific character patterns in text. They can be used to val- idate data to ensure that it is in a particular format, to replace parts of one string with another, or to split a string.

Fill in the blank(s) with the appropriate word(s).