These patterns support one of the most common tasks in object-oriented programming—the creation of objects in a system. Most OO systems of any complexity require many objects to be instantiated over time, and these patterns support the creation process by helping to provide the following capabilities:
Generic instantiation – This allows objects to be created in a system without having to identify a specific class type in code.
Simplicity – Some of the patterns make object creation easier, so callers will not have to write large, complex code to instantiate an object.
Creation constraints – Some patterns enforce constraints on the type or number of objects that can be created within a system.
The following is the list of creational design patterns:
- Abstract Factory
- Builder
- Factory Method
- Prototype
- Singleton
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