10/12/2021 0 Comments Observer Design Pattern In Java
Define a one-to-many dependency between objects so that when one object changes state, all its dependents are.In this post, We will talk and learn about the Observer Design Pattern in Java.The observer pattern can also be expressed by an example in life, that is, reading a magazine from the post office. Let's first introduce the WeatherObserver interface and our races, Orcs and Hobbits.What is Observer Design Pattern in Java. The observer pattern is a software design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods.
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