What does "instantiate" mean in programming?

instantiate is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.

Definition

To create a specific object from a class using the new keyword. Each instance has its own copy of the instance properties defined in the class.

Example

"const srv = new UserService(); // instantiating UserService"

Word forms

Form	Type	Meaning	Example
instantiate	verb (infinitive)	To create an instance of a class	"Instantiate the service before calling its methods."
instantiated	past tense	Created an instance of a class	"The controller was instantiated once per request."
instantiating	gerund	Creating an instance of a class	"Instantiating too many objects in a loop can cause memory pressure."

Related terms

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