Java Program to Check Whether a Number is Even Or Odd (3 ways)

1. Introduction

In this tutorial, You will learn how to write a java program to check a given number is even or odd. This can be done by using a mathematic formula or a different approach. Every number in the world must fall under either an even or odd category. Many developers may provide the solution in different ways but finally, they will tell even or not.

Java Program To Add Two Numbers (Scanner) For Freshers

1. Overview

In this tutorial, You'll learn writing a java program to add two numbers for freshers or fresh graduates. This program shows how to find the sum of two numbers in a java programming language. This is a very basic when we learn any language first. So, We will see how to do sum for two numbers using '+' symbol directly and next will read the values from user input and do the sum.

Java ArrayList Real Time Examples

1. Overview

In this tutorial, You'll learn ArrayList with Real-Time examples. If you are new to java programming, you'll get a question "What are the real-life examples of the ArrayList in Java?". Initial days when I was in engineering the second year, my professor was teaching ArrayList in java.

I have learned about it. ArrayList is a dynamic array to store the elements and also it grows the size automatically if it reaching its threshold value. But when we should be using the ArrayList in realtime applications.

Remember, for now, In the software world there is no application deployed in production without ArrayList. Now think about the usage of ArrayList. ArrayList can be used in many more scenarios in realtime.

We will be seeing a few real-time examples of ArrayList in Java.

How to Read a Large File Efficiently In Java

1. Overview

In this tutorial, You'll learn how to read the file fast in java efficient manner.

Before going to our topic, Every programming developer must be working on some technology such as java, python, c++ or swift. Either developing web applications or mobile applications. All the user operations must be saved in files, databases or in-memory or in image format. But here the challenging part is doing it considering the performance aspect. This is what you are going to see how to read the file in java efficiently.

And also this is a famous interview question for all level java developers. We will see the good and bad ways to read large files.