Design Pattern ( Part - 2 ) : Singleton Design Pattern

Singleton pattern is one of the simplest design patterns in Java. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object.

Singleton pattern ensure that only single instance should get created and single object should be used by all other classes.
There are two forms of singleton design pattern.
*Early Instantiation: creation of instance at load time.
**Lazy Instantiation: creation of instance when required.

► Why and when should we use Singleton Pattern?
1. Singleton pattern is used where only a single instance of a class is required to control the action throughout the execution. A singleton class shouldn’t have multiple instances in any case and at any cost.
2. Singleton classes are used for logging, driver objects, caching and thread pool, database connections.
3. Saves memory because object is not created at each request. Only single instance is reused again and again.

*****************************
Difficulty: Medium
Topic: Design Pattern
DS: Singleton Design Pattern
Company: FAANG
*****************************

► Buy me a Coffee:☕ ☕ ☕ https://www.buymeacoffee.com/techanindya
► Code: https://github.com/cracktechnicalinterview/Code/blob/master/TechnicalInterview-Codes/src/DesignPattern/SingeltonMain.java

► [IMPORTANT]
Complete List of interview questions that you need to prepare: https://bit.ly/36AY8Y4

► The playlist
Complete Design Pattern Series:
1. Factory Design Pattern in Java: https://youtu.be/06zR-19xIvQ
2. Singleton Design Pattern: https://youtu.be/krCons3qazE
3. Observer Design Pattern: https://youtu.be/XshkvD7PhhI
4. Strategy Design Pattern: https://youtu.be/lwBuKqrbhoA

Difficulty: Medium
Topic: Design Pattern
DS: Singelton Design Pattern
Company: FAANG

► Social Connect:
LinkedIn: https://www.linkedin.com/in/anindya-sankar-dasgupta-39a315ba/
Facebook: https://www.facebook.com/anindya.s.dasgupta
Instagram: https://www.instagram.com/anindya_bunny/
Medium: https://bit.ly/3loMzsa
FB page: https://www.facebook.com/technicalinterview03/
Telegram: https://t.me/TechnicalInterview_official

► Additional Tags:
singleton design pattern c++,
singleton design pattern javascript,
singleton design pattern by durga,
singleton design pattern in c# with real world example,
singleton design pattern in spring,
singleton design pattern android,
singleton design pattern and static class,
singleton design pattern break,
singleton design pattern c# corner,
singleton design pattern java,
singleton design pattern javascript example,
singleton design pattern lazy initialization,
singleton design pattern lazy initialization c#,
singleton design pattern problems,
singleton design pattern private constructor,
singleton design pattern selenium,
singleton design pattern spring boot,
singleton design pattern thread safe,
singleton design pattern thread safe java,
singleton design pattern tutorial,
singleton design pattern with multithreading,
singleton design pattern with synchronized option
singleton design pattern c#
singleton design pattern in java
singleton design pattern example
singleton design pattern interview questions
singleton design pattern python
singleton design pattern javascript
singleton design pattern selenium
singleton design pattern example in java
singleton design pattern advantages
singleton design pattern advantages and disadvantages
singleton design pattern application
singleton design pattern advantages and disadvantages in java
implement a singleton design pattern
how does a singleton design pattern work
singleton design pattern best practices
singleton design pattern best example c#
singleton design pattern c# with real time example