Introduction to design patterns

                       Smart Techie

                 A design pattern is a solution to a commonly occurring problem. The design patterns are not a finished solution. It is a template for “how to solve a design problem?”. The design patterns are the language and implementation independent.


In the process of developing Object-Oriented Systems, we have two phases.

  1. Object Oriented Analysis(OOA) – Addresses the functional challenges of a system and mainly focuses on “what the system does?”.OOA provides guidance for implementation.
  2. Object-Oriented Design(OOD) – Addresses the implementation challenges and mainly focuses on “how the system does?


The design patterns are classified into three categories.

Design Patterns Classification

  1. Creational – concerns with the creation process of objects & classes

  2. Structural composition of classes & objects

  3. Behavioral – characterizes interaction & responsibility of objects & classes

In the coming days, we will discuss each design pattern in detail.

I am Siva Prasad Rao Janapati. Working as Technical Architect. Has hands on experience on ATG Commerce(DAS/DPS/DCS), Mozu commerce, Broadleaf Commerce, Java, JEE, Spring, Play, JPA, Hibernate, Velocity, JMS, Jboss, Weblogic,Tomcat, Jetty, Apache, Apache Solr, Spring Batch, JQuery, NodeJS, SOAP, REST, MySQL, Oracle, Mongo DB, Memcached, HazelCast, Git, SVN, CVS, Ant, Maven, Gradle, Amazon Web services, Rackspace, Quartz, JMeter, Junit, Open NLP, Facebook Graph,Twitter4J, YouTube Gdata, Bazzarvoice,Yotpo, 4-Tell, Alatest, Shopzilla, Linkshare. I have hands on experience on open sources and commercial technologies.

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