Hello Friends, In today session we are going to see LinkedList in Java collection, Methods of LinkedList, Hierarchy of LinkedList and Internal working of LinkedList etc. What is LinkedList? LinkedList is a class which implements …
Hi Friends, In this tutorial we will discuss about Collection Framework In Java, different classes and Interfaces which are inside the collection framework, methods of List and will see sample code of List and ArrayList. …
Hello Friends, Today we will discuss one more important concept of java which is “Lambda Expression” in Java. Lambda expression was added in Java 8. We are already known Java is an object oriented programming …
Hello, In this post we will see Program to find duplicate characters in a string in Java, find duplicate characters in a string java without using hashmap, program to remove duplicate characters in a string …
In this post, we will learn What is Token in java? which is very important part of java programming. What is Token in Java? Tokens are smallest elements of a program that is identified by …
In this post we will see different methods of generate random number and String in Java. Generate Random Number in java Logic 1- Using Random class package demopkg; import java.util.Random; public class GenRandomNumber { public …
In this Post, we will learn different ways to reverse a number in java. This is frequently asked question in automation testing interviews. Logic 1: Reverse a Number in java using while loop package demopkg; …
In this tutorial, we will see different ways of swap two numbers in Java. We will also see how to swap two numbers without using third variable. Logic 1: Using third variable package demopkg; public …
In this tutorial, we will discuss about Functional Interface which is the feature in Java 8. What is Functional Interface? An interface that contains only one abstract method is called Functional Interface. SAM – This …
In this post, we will learn How to separate out digits from a String and How to sum those digits. Algorithm: Take a String. Convert it into array of characters Apply for loop till length …