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 The "this" keyword in Java is a reference to the object of the current class Using it, you can refer a field, method or, constructor of a class Referring to a field using "this" keyword As discussed you can refer an instance filed/variable of a class from an instance method or, a constructor using "this" keyword Computer dictionary definition of what Java reserved words are, including related links, information, and terms Java reserved words are keywords that are reserved by Java functions or other uses that cannot be used as identifiers (eg, variable names, function names, class names) If a reserved word was used as a variable, you would getKeywords of interest In the Programming in Java book, we are concerned with the following keywords abstract continue for package this assert default if private throw boolean double implements protected throws break else import public try byte enum instanceof return void case extends int short while catch final interfa