Design Patterns

Singleton is one of the most widely used creational design pattern to restrict the object creation by applications. In real world applications, resources like Database connections or Enterprise Information Systems (EIS) are limited and should be used wisely to avoid any resource crunch. To achieve this, we can implement Singleton design pattern to create a wrapper class around the resource and limit the number of object created at runtime to one.

Facade Design Pattern is one of the Structural design patterns (such as [Adapter pattern](/community/tutorials/adapter-design-pattern-java "Adapter Design Pattern in Java – Example Tutorial") and [Decorator pattern](/community/tutorials/decorator-design-pattern-in-java-example "Decorator Pattern in Java – Example Tutorial")). Facade design pattern is used to help client applications to easily interact with the system. Facade Design Pattern ![facade design pattern, facade pattern, […]

URL: https://www.progressiverobot.com/visitor-design-pattern-java/ Visitor Design Pattern is one of the behavioral design pattern. Visitor Design Pattern Visitor pattern is used when we have to perform an operation on a group of similar kind of Objects. With the help of visitor pattern, we can move the operational logic from the objects to another class. For example, think […]

Welcome to the Factory Design Pattern in Java tutorial. Factory Pattern is one of the Creational Design pattern and it's widely used in JDK as well as frameworks like Spring and Struts. Factory Design Pattern  The factory design pattern […]

Today we will look into Flyweight design pattern. Flyweight Design Pattern According to GoF, flyweight design pattern intent is: > Use sharing to support large numbers of fine-grained objects efficiently Flyweight design pattern is a Structural design pattern like [Facade pattern](/community/tutorials/facade-design-pattern-in-java "Facade Pattern in Java – Example Tutorial"), [Adapter Pattern](/community/tutorials/adapter-design-pattern-java "Adapter Design Pattern in Java […]

Learn the Gang of Four design patterns and understand how GoF patterns improve software design using best practices.

Welcome to Abstract Factory Design Pattern in java example. Abstract Factory design pattern is one of the Creational patterns. Abstract Factory pattern is almost similar to [Factory Pattern](/community/tutorials/factory-design-pattern-in-java) except the fact that its more like factory of factories. Abstract Factory  If you are familiar with [factory […]