Introduction

Enum Singleton

Eager Singleton With Static Field

Lazy Singleton With Static Field

Synchronized Lazy Singleton

Double Checked Locking Singleton

Bill Pugh Singleton

Recap of Prototype Design Pattern

Introduction of Singleton Design Pattern

Singleton Pattern and Spring Framework

Singleton Pattern Code Implementation Example

Usage of Singleton Pattern

Advantages of Singleton Pattern

Summary of Singleton Pattern

Next Video on Singleton Pattern

Common Use Cases of the Singleton Pattern

Implement a Configuration Manager

Implement a Cache Manager

Eager Initialization

Lazy Initialization Approach

Singleton Implementation

Build Pug Singleton Implementation

Lazy Initialize Singleton Pattern

The Thread Safe Singleton

What is Singleton Class in Java

How to create a singleton class in Java?

Steps to create a singleton class

Don't allow user to create instance with default constructor

Create a method which should be static

How to get instance of a class?

Create a static method in Singleton class

Conclusion

Intro

What is a reference variable in Java?

How to access a singleton in Java?

What is the purpose of lazy initialization?

How to synchronize a method in Java?

How to retrieve a Double Check Locked Singleton instance

How to create an object of a Double Check Locking Singleton

How to get instance of a static inner class

Enum initialization

Conclusion

Create a Singleton Class Called Logger

Lazy Initialization

Final Summary

Introduction

What is the Singleton Pattern?

Simple Singleton Implementation

Thread-Safe Singleton Implementation

Enhanced Singleton Implementation

Recap

Thanks for Watching!

Intro

Creational Patterns

Singleton Definition & Usage

Nonsingleton example

Singleton example

Intro

Provide a global point of access to the Singleton instance

Testing the singleton

How to create a singleton

Serialization example

Hashcode example

Singleton with multiple threads

Violation of singleton instance

Garbage collection with Singleton

When to use a singleton

Singleton Design Pattern using enum INSTANCE

Create Singleton Design Pattern

How to create an instance of an enum

How to assign values to Singleton Design Pattern object?

Advantages of using enum as Singleton Design Pattern

Conclusion

Introduction & What is a Singleton?

1. Eager Initialization

2. Static Block Initialization

3. Lazy Initialization (Non-Thread-Safe)

4. Thread-Safe Singleton (Synchronized Method)

5. Double-Checked Locking (DCL) & Volatile

6. Bill Pugh Singleton (Static Inner Helper)

Bonus: Enum Singleton (Best Practice)

Which One Should You Actually Use? (Summary)

Intro

Problem with Static Objects

Lazy Instantiation with Threads

What Is the Design Pattern

Singleton Design Pattern

What Is the Solution Singleton Design Pattern

Design a Java Class Allowing Only One Instance To Be Created

How To Implement a Singleton Design Pattern Is in a Java Class

Implementing Private Constructor

The Factory Method

Ways of Implementing Singleton Object Creation

Lazy Instantiation

Singleton Design Pattern Implementation

Intro

What is the Singleton Pattern?

Rocket Ship Guidance System Example

Private Static Instance of the Class

Summary

Factory Pattern Example

Synchronization

Example of the Singleton Pattern

Testing the Singleton Pattern

Conclusion