Design Pattern Tutorials
As we need to generate a huge number of objects of the same class, so it will occupy a big amount of memory. To avoid that, we can create objects with only the required elements and keep that in a cache. As only the required properties are there so the number of objects will be smaller now. As the only difference between those objects is their extrinsic properties, we will pass those properties while using that specific object.
Facade pattern is used to hide the complexity of underlying subsystems. A new layer is created as Facade, which works as an entry point for the client. This article demonstrates Facade pattern implementations in Java.
Facade pattern adds a new layer to the system, on top of the underlying complex subsystems. This new layer works as an entry point for the client. The client can interact with this new layer, instead of communicating with the subsystems directly. That way the client does not need to be aware of the subsystems and gets a common interface.
Adapter pattern is used when an interface does not match the new requirement and the existing interface needs to adapt to another interface. This article demonstrates Adapter pattern implementations in Java.
Adapter pattern is used to enable communication between incompatible interfaces.
Strategy pattern is used when there are multiple algorithms available for the same purpose, and we need to decide between those algorithms. Strategy pattern helps to decide the algorithm and return the generated object to be used. This article demonstrates Strategy pattern implementations in Java. Check the following examples.
Singleton pattern is used to ensure that only an instance of a class is created. Implementing the Singleton pattern in Go is slightly different from other languages. This article demonstrates Singleton pattern implementation in Go.
Singleton pattern is used to ensure that only one instance of a class is created in any case, and whenever you want to get an instance of that class, then the same object instance is returned.
Singleton pattern generates and returns the same single instance of a class, in any case. No matter how we generate the instance and how many times we generate it, the same single instance will be returned. This article discusses the Singleton pattern implementation in TypeScript.
Factory pattern helps to generate object by choosing one class from a bunch of classes. The class is chosen by some predefined criteria. This article demonstrates Abstract Factory pattern implementations in Java.