OOP: Instance (Definitions)

"A concrete representation of a class. Instances are objects that are typically created by sending an alloc or new message to a class object." (Stephen G Kochan, "Programming in Objective-C", 2003)

"An object of a particular class is called an instance of that class." (Marcus Green & Bill Brogden, "Java 2 Programmer Exam Cram 2 (Exam CX-310-035)", 2003)

"An individual member of a class. In the UML, called an object." (Craig Larman, "Applying UML and Patterns", 2004)

"A concrete representation of a class. Instances are objects that are typically created by sending an alloc or new message to a class object." (Stephen G Kochan, "Programming in Objective-C" 4th Ed., 2011)

"A specific object that is of a class type." (Rod Stephens, "Start Here! Fundamentals of Microsoft .NET Programming", 2011)

"An instance of a class is an object of the class's type. Different instances of the same class have the same properties, methods, and events but they may have different property values." (Rod Stephens, "Stephens' Visual Basic Programming 24-Hour Trainer", 2011)

"Another term for an object created by invoking a class constructor or a value of a primitive type." (Dean Wampler, "Functional Programming for Java Developers", 2011)

"(1) An occurrence of an entity. (2) The implementation of a database server (e.g., an Oracle instance)." (Craig S Mullins, "Database Administration: The Complete Guide to DBA Practices and Procedures 2nd Ed", 2012)

"In a map pattern one invocation of an elemental function on one element of the map." (Michael McCool et al, "Structured Parallel Programming", 2012)

"Short for 'an instance of a class', meaning an object of that class." (Jon Orwant et al, "Programming Perl" 4th Ed., 2012)

"One occurrence of something that has many occurrences, such as entities or objects." (James Robertson et al, "Complete Systems Analysis: The Workbook, the Textbook, the Answers", 2013)

"An entity to which a set of operations can be applied and that has a state that stores the effects of the operations." (Sybase, "Open Server Server-Library/C Reference Manual", 2019)

"An occurrence of something, usually an object. When a class is instantiated to produce an object, we say the object is an instance of the class." (Daniel Leuck et al, "Learning Java, 5th Ed.", 2020)