Find Two Pairs in array whose sum is equal to Target in O(n) | Pairs | Array | Infosys

In this video, you'll learn about How to find Two Pairs in array whose sum is equal to target in o(n)|| Array

There are lots of new features which were added in Java 8. Here is the list of important features which are mostly asked as java 8 interview questions:

Lambda Expression
Stream API
Default methods in the interface
Functional Interface
Optional
Method references
Date API
Nashorn, JavaScript Engine

Main advantages of using Java 8?
More compact code
Less boilerplate code
More readable and reusable code
More testable code
Parallel operations

Interview question on java 8 Lambda expressions is a very commonly asked question :
Lambda expression is an anonymous function ( without name, return type and access modifier and having one lambda symbol )

Functional interfaces are those interfaces which can have only one abstract method .

It can have static method, default methods.