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Polymorphism is a fundamental concept in object-oriented programming (OOP) that allows objects to be treated as instances of their parent class, fostering flexibility and extensibility in software design. The term “polymorphism” comes from Greek, meaning “many forms,” reflecting the ability of a single interface or method to represent various behaviors. In Java, polymorphism is primarily …
The Active Object Pattern is a concurrency design pattern that decouples method invocation from method execution by using an intermediary to manage asynchronous requests. It allows clients to invoke methods on an object as if they were synchronous, while the actual execution occurs asynchronously in a separate thread. This pattern is particularly useful for improving …
The Future Pattern, also known as the Promise Pattern in some contexts, is a design pattern used primarily in asynchronous programming. It addresses the challenge of managing computations that may not have completed yet but will yield a result in the future. This pattern is particularly useful in scenarios where non-blocking operations are necessary, such …
The Producer-Consumer Pattern is a concurrency design pattern that addresses the problem of coordinating multiple threads where some threads (producers) generate data and others (consumers) process it. It uses a shared buffer or queue to decouple producers and consumers, allowing them to operate independently and asynchronously. This pattern is widely used in scenarios like message …
The Thread Pool Pattern is a design pattern used in concurrent programming to manage a pool of worker threads that can be reused to perform multiple tasks. This pattern helps improve the performance and resource management of applications by avoiding the overhead of creating and destroying threads for each task. The main idea behind the …
Concurrency patterns are design solutions that address common problems associated with concurrent programming. Concurrency, the simultaneous execution of multiple interacting computational tasks, can significantly improve the performance and responsiveness of applications. However, it also introduces complexities such as race conditions, deadlocks, and thread contention. Concurrency patterns provide tried-and-true strategies to manage these complexities effectively. Important …
The Model-View-ViewModel (MVVM) Pattern is an architectural design pattern that separates an application into three core components: Model, View, and ViewModel. It is particularly popular in UI-centric applications, such as those built with frameworks like WPF (Windows Presentation Foundation), Xamarin, Angular, or Android with Jetpack’s ViewModel. MVVM enhances separation of concerns, testability, and maintainability by …
The Model-View-Presenter (MVP) Pattern is an architectural design pattern that organizes an application into three components: Model, View, and Presenter. It is a derivative of the Model-View-Controller (MVC) pattern, designed to enhance testability and separation of concerns, particularly in user interface (UI) applications. MVP is commonly used in frameworks like Android development, GWT (Google Web …
The Model-View-Controller (MVC) pattern is a fundamental architectural pattern in software engineering, particularly prominent in the design of web applications and user interfaces. It separates an application into three interconnected components, each with distinct responsibilities: the Model, the View, and the Controller. This separation facilitates modularity, maintainability, and scalability, making it easier to manage and …
The Visitor Pattern is a behavioral design pattern that allows you to add further operations to objects without modifying their structure. It separates an algorithm from the object structure on which it operates, thereby enabling the addition of new operations without altering the classes of the elements on which it operates. This pattern is particularly …
