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Singleton Design Pattern in Java | Core Java Interview Questions & Real Life Examples

In this video, we will learn Singleton Design Pattern in Java from scratch.
👉 What is a Singleton Class?
👉 Why do we use Singleton in real-world applications?
👉 Different ways to implement Singleton in Java (Eager, Lazy, Thread-Safe, Bill Pugh, Enum).
👉 Real-life examples: Prime Minister, Water Tank, Logger, Database Connection.
👉 Advantages, disadvantages, and best practices for using Singleton.

The Singleton Pattern ensures that only one instance of a class is created and provides a global point of access to that instance. It is one of the most commonly asked Java Interview Questions and is widely used in software development (Logging, Configuration Manager, Cache, DB Connections, Thread Pools).

By the end of this video, you will clearly understand how Singleton works, its implementation in Core Java, and its importance in design patterns.

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