design-patterns

Implementation of different design patterns used in object oriented world

Creational

• Singleton

  Real world example -> LogManager, Database connections,Config files and java.lang.Runtime#getRuntime()

• Builder

  Real world example -> StringBuilder, javax.json.JsonBuilder,Custom SqlQueryBuilder

• Prototype

  Usage - Scenario where creation of new objects is costly.

• Factory

  Real world example ->java.util.Calendar#getInstance()

• Abstract factory

  Real world example -> javax.xml.parsers.DocumentBuilderFactory#newInstance()

Structural

• Adaptor

  Real world example -> Making Arrays compatible with Lists, Streams API compatible with other Java streams

• Bridge

• Composite

• Decorator