Latest Articles

21 December 2014

In this article we will see how to implement the Visitor design pattern in Java.

The Visitor Design Pattern goal is to provide a way to clearly separate domain objects from algorithms that operate over them. This way one may change the algorithms themselves without modifying the d... Read more

design-patterns java

Java Adapter Pattern example

16 April 2014

In this tutorial we will see how to implement the Adapter design pattern in Java.

The Adapter Design Pattern is a structural pattern that, as the name states, provides a way of adapting an existing interface into another one that is expected instead. This pattern provides a way of ... Read more

design-patterns java

Java Builder Pattern example

20 March 2014

In this tutorial we will see how to implement the Builder design pattern in Java.

The Builder Design Pattern is a creational pattern that solves the problem of excessive constructor overloading (or telescoping constructor), where the number of required constructors grows exponentia... Read more

design-patterns java

Java Strategy Pattern example

05 March 2014

In this article we will see how to implement the Strategy design pattern in Java.

The Strategy Design Pattern provides the ability of selecting a specific algorithm from a family of similar algorithms at runtime in order to complete a given task. The concrete algorithm implementati... Read more

design-patterns java

Java Abstract Factory Pattern example

29 January 2014

In this tutorial we will see how to implement the Abstract Factory design pattern in Java.

The Abstract Factory Design Pattern is a creational pattern. It's main purpose is to provide a way to create a related set of concrete objects without knowing about their concrete implementation. Actu... Read more

design-patterns java

Java Factory Pattern example

22 January 2014

In this tutorial we will see how to implement the Factory design pattern in Java.

The Factory Design Pattern is a creational pattern. Its main purpose is to encapsulate object creation logic that would be otherwise spread all over the application. The factory should also return alw... Read more

design-patterns java

Java Enum implementing an Interface

07 February 2013

In this tutorial you will learn how to implement an Interface with an Enum in Java.

Some developers are not aware of this fact but we can implement Interfaces with Enums in Java. This may be useful when we need to implement some business logic that is tightly coupled with a discrimin... Read more

design-patterns java

About the author

Gonçalo Marques is a Software Engineer with several years of experience in software development and architecture definition. During this period his main focus was delivering software solutions in banking, telecommunications and governmental areas. He created the Bytes Lounge website with one ultimate goal: share his knowledge with the software development community. His main area of expertise is Java and open source.

GitHub profile: https://github.com/gonmarques

He is also the author of the WiFi File Browser Android application: