Spring 5 Design Patterns

Iterator design pattern in the Spring Framework

The Spring Framework also extends the Iterator pattern through the CompositeIterator class. Mainly this pattern used in the Collection Framework of Java for iterating the elements in sequence.

Now that we've seen Iterator design pattern, let's turn to a different variant of it--Observer design pattern.

Observer Design Pattern

Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically -GOF Design Pattern

Observer pattern is one of very common design pattern, This pattern is a part of the Behavioral design pattern family of GOF pattern that addresses responsibilities of objects in an application and how they ...