Java 8 What is Lambda Expression & Functional Interface | Java 8 feature | With Example Program
In this lecture, we will discuss about the lambda expression and Functional Interface in Java 8.
showing the lambda expression and Functional interface with example program
What is Lambda Expression
What is Functional Interface
What are features of Java 8
lambda expression Java 8
Interface
Functiona interface Java 8
Lambda Expression With Example
What is Lambda expression?
Lambda expression is a feature of Java which was included in Java SE 8. It provides a way to represent one method interface using an expression. It is very useful in collection library. It helps to iterate, filter and extract data from collection.
It is a Expression through which we can represent an Anonymous function
What is Anonymous :- it is Nameless or Unknown
What is Anonymous function:- A method , doest not have any name or modifier
Syntax : Parameter Expression Body
Functional Interface?
The interface who contains only one abstract method but can have miltiple default and static method is called functional inteface.
Example :
Runnable interface has :- only one run() method
Callable interface has :- only one call() method
Comparable interface has :- only one compareTo() method
Comparator interface has:- one compare() method
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