Singleton Design Pattern | Design Pattern in Java | Eager Initialization | Enum Singleton

Singleton Design Pattern | Design Pattern in Java | Eager Initialization | Enum Singleton
In this video I am going to discuss about the Eager Initialization, Enum Singleton and Static Block Initialization.
Also I will do some hands on these methods.

What is design patterns in java
What is design patterns in core java
Advantage of design patterns
Use of design patterns
Types of design patterns in java
Types of design patterns in core java
Types of design patterns
What is singleton design pattern
What is singleton design pattern in java
Implementation of singleton design pattern

Design Patterns:

Design Pattern is a well-proved solution for commonly occuring problem in Software design.

A. Core Java Design Patterns.

1.Creational Design Pattern

Factory Pattern
Abstract Factory Pattern
Singleton Pattern
Prototype Pattern
Builder Pattern.

2. Structural Design Pattern

Adapter Pattern
Bridge Pattern
Composite Pattern
Decorator Pattern
Facade Pattern
Flyweight Pattern
Proxy Pattern

3. Behavioral Design Pattern

Chain Of Responsibility Pattern
Command Pattern
Interpreter Pattern
Iterator Pattern
Mediator Pattern
Memento Pattern
Observer Pattern
State Pattern
Strategy Pattern
Template Pattern
Visitor Pattern

B. J2EE Design Patterns.
J2EE design patterns are built for the developing the Enterprise Web-based Applications.

1. Presentation Layer Design Pattern

Intercepting Filter Pattern
Front Controller Pattern
View Helper Pattern
Composite View Pattern

2. Business Layer Design Pattern

Business Delegate Pattern
Service Locator Pattern
Session Facade Pattern
Transfer Object Pattern

3. Integration Layer Design Pattern

Data Access Object Pattern
Web Service Broker Pattern


Advantage of the Design Patterns:
1. Speed up the development process.
2. Code more flexible, reusable and maintainable.
3. Define the System architecture.

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