Functional Interface in Java Explained with Demonstration | Java 8 Features

Опубликовано: 07 Август 2022
на канале: Think Constructive

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Java 8 Features - Functional Interface in Java is very useful feature of Java 8, specifically it is an extremely important one for Lambda expressions. In this session we will learn how to create functional interface in Java. What is functional interface in Java. This is another important java interview question. We will also learn the constraints of functional interface in java and in built java functional interfaces such as Runnable , Callable etc. Important annotation is @FunctionalInterface
Some key point -
1. It's a Java 8 Feature
2. Exactly ONE Abstract method in an Interface
3. Single Abstract Method Interface (SAM)
4. @FunctionalInterface java annotation is used
This learning will be very useful for Java developers.

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Chapters
00:00 Welcome Note
00:31 Introduction of Java Functional Interface
00:46 Key Points of Java Functional Interface
01:18 @FunctionalInterface Java Annotation
04:06 Java Functional Interface Demonstration / Example
07:53 Java in built Functional Interface - Runnable , Callable , etc
09:21 Summary / Recap of Java Functional Interfaces
10:02 Thank You Note

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