OOP encourages encapsulation (object behavior mediates access to object state) and polymorphism (multiple kinds of entities can be interacted with using a common interface or vocabulary), though the mechanisms for accomplishing these goals vary across OO languages.
OOP encourages us to model complex entities and processes using objects, which combine state and behavior. (Of course, these are all overstatements for effect.) " for OOP, this is obviously "everything is an object." Functional programming says "everything is a function" actor-based systems say "everything is an actor", etc. Most programming paradigms have a one-sentence slogan of the form "Everything is a. But complexity comes in many forms, and not all paradigms handle all forms of complexity equally well. The goal of any programming paradigm is to manage complexity. In this article, we'll cover what is meant by this term and how it might affect how we program in Java. Specifically, records, sealed classes, and pattern matching work together to enable easier data-oriented programming in Java. While each of these features are self-contained, they are also designed to work together. Project Amber has brought a number of new features to Java in recent years - local variable type inference, text blocks, records, sealed classes, pattern matching, and more. We can freely mix and match them as we see fit. The techniques of OOP and data-oriented programming are not at odds they are different tools for different granularities and situations.But when we're modeling simple services that process plain, ad-hoc data, the techniques of data-oriented programming may offer us a straighter path. When we're modeling complex entities, OO techniques have a lot to offer us.Records, sealed classes, and pattern matching, make that easier.
Coding in java code#
Data-oriented programming encourages us to model data as (immutable) data, and keep the code that embodies the business logic of how we act on that data separately.Java's strong static typing and class-based modeling can still be tremendously useful for smaller programs, just in different ways.OOP is at its best when it is defining and defending boundaries. OOP encourages us to model complex entities and processes using objects, which combine state and behavior.Specifically, records, sealed classes, and pattern matching work together to enable easier data-oriented programming in Java. Project Amber has brought a number of new features to Java in recent years.
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