Learn the difference between design principles and design patterns. For example, if you want to ensure that only a single instance of a class exists, then you can use the Singleton design pattern which suggests the best way to create a class that can only have one object.ĭesign principles are different than design patterns. A design pattern suggests a specific implementation for the specific object-oriented programming problem.
Design pattern in software engineering is a general, reusable solution to a commonly occurring problem in software design.ĭevelopers face some problems while developing applications or in the software application Lifecycle which are common and repeated, for example, creation and disposal of objects, interaction between objects, the structure of classes that enhance cohesion and loose coupling, fixing of bugs in a way that minimize changing of source codes, etc.ĭesign patterns are used to solve these commonly occurring problems in the development phase so that we can minimize the problems after deployment.
