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Study with Quizlet and memorize flashcards containing terms like 1. _____ represents an entity in the real world that can be distinctly identified. A) An object B) A data field C) A class D) A method, 2. _____ is a construct that defines objects of the same type. A) A class B) A method C) An object D) A data field, 3. An object is an instance of a _____.
In programming, names for values are called variables.
a. to refer to aninstance variable from a method when it has the same name as a method parameter
Another way to explain this is that after an object has been instantiated, it can be initialized by assigning it a variable, which is where the programmer assigns value (or “contents”) to the object. For example, the use of the word dimension or “dimming” is a practice of initializing the variable in code.
Another way to distinguish the process of instantiation is to contrast it with the practice of declaration, which specifies properties of variables and classes, but not objects. With a declaration, the programmer notifies the compiler of these properties (or uses an alternative method such as an interpreter ). As experts point out, declarations do not instantiate objects.
Instantiate (a verb) and instantiation (the noun) in computer science refer to the creation of an object (or an “instance” of a given class) in an object-oriented programming (OOP) language. Referencing a class declaration, an instantiated object is named and created, in memory or on disk.
Although it may seem like a small detail, the practice of instantiation is one of the most fascinating parts of OOP to some newcomers, given how objects and components are created “ex nihilo” in the construction of forms, code modules and assorted digital frameworks that accomplish application functionality. Understanding instantiation also gives the user a better knowledge of the object in the codebase in general, helping to clarify the relationship between things such as classes, objects, variables and functions.
Object instantiation uses various methods and terminology in different programming environments: For example, in C++ and similar languages, to instantiate a class is to create an object, whereas in Java, to instantiate a class creates a specific class. The results in both languages are the same ...
In general terms, to “instantiate” an object just means to create it, again, as an instance of a class. But there are technical aspects to how this is done. The terminology can be confusing. The connection of “instantiate” to “instance” helps, but for those who do not practically work on OOP, the jargon might still seem pretty opaque. The key is to fully understand what a class is, what an object is and how the two are different, as well as how an object works in code, what it holds and what it means to create an object.
The results in both languages are the same (executable files) but the path to getting there is a bit different. Tech professionals might talk about instantiation a bit differently, depending on the environments they are using, as well as the protocols and methods they use in working with active classes to create objects.
When you instantiate a class or object, you're creating a new instance of it, or allocating memory to "hold" one. Initializing that object would be the instructions that are performed during instantiation.
A variable is initialized with a value. An object is instantiated when memory is allocated for it and it's constructor has been run. This variable has not been initialized. Once I assign a value to the obj variable, the variable will be initialized.
We say that the new Object was instantiated because we have created a new instance of it .
To initialize something is to set it to its initial value. To instantiate something is to create an instance of it.
The difference is that instantiation is creation of a thing that can do stuff; initiation is stuff that gets done.
It is the conceptual and technical case the "objectA is an instance of a Class". "Instantiation" and "instance of" have precise meaning - an object gets its type, definitions, and values from a Class.
Initiation is when you set up a set of initial conditions for something. That something might be an object, where you tell it to initiate itself, or just a variable to which you assign a value. An object might initialise some other things, or even instantiate other objects as part of its initiation.
In programming, names for values are called variables.
a. to refer to aninstance variable from a method when it has the same name as a method parameter