Optional Class In Java & Optional Class Methods in JAVA | Tutorail | Dilip Singh

As part of making sessions about features introduced from the JAVA 8 Version, I have created this session for Understanding Optional Class, it's functionalities, and usage in Java language for Java beginners to understand more specifically.

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📌 Other Java 8 sessions with Examples:

Default & static Methods in Interfaces:    • default Methods in Interfaces | stati...  

Functional Interfaces & Lambda Expressions :    • Functional Interfaces in Java | Lambd...  

Method and Constructor References:    • Method References  in JAVA | Construc...  

Pre-Defined Functional Interfaces:    • Predicate, Function, Consumer, Suppli...  

📌JAVA 8 | FEATURES | Playlist:    • JAVA 8  Features Tutorials  


The Optional class defined in java.util package. The Optional class in Java 8 is a container object which is used to contain a value that might or might not be present.

Optional classes are that represent a value that can be present or absent. It was introduced as a way to help reduce the number of NullPointerExceptions that occur in Java code. It is a part of the java.util package and was added to Java as part of Java 8.

Optional is a container that either contains a non-null value or nothing(empty Optional ). The Optional class is an implementation of the Null Object pattern, which is a design pattern that was designed to reduce the number of null checks in code. With Optional, you can write cleaner and more concise code that is easier to maintain.

I have explained the internal details of the below points in this session.
👉What is Optional Class
👉Use Cases Of Optional Class and Implementations
👉Methods of Optional Class

Source Code: https://github.com/dilipsingh1306/opt...

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