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GeezerVison is showing github.com — java-design-patterns/iterator at master · CodingKrishna/java-design-patterns

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README.md

Outline
layout pattern
title Iterator
folder iterator
permalink /patterns/iterator/
pumlid FSV13OGm30NHLg00uljsOu85HeaJsTzB-yjfBwCtgrfjUKXwMovWneV8-IcduiezGxmEWnXA7PsqvSDWfvk_l1qIUjes6H2teCxnWlGDOpW9wdzAUYypU_i1
categories Behavioral
tags
Java
Difficulty-Beginner
Gang Of Four

Also known as

Cursor

Intent

Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.

alt text

Applicability

Use the Iterator pattern

  • to access an aggregate object's contents without exposing its internal representation
  • to support multiple traversals of aggregate objects
  • to provide a uniform interface for traversing different aggregate structures

Real world examples

  • java.util.Iterator
  • java.util.Enumeration

Credits

  • Design Patterns: Elements of Reusable Object-Oriented Software
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