What Is HashMap In Java and How It Works Internally

While working with Java, understanding data is crucial for writing efficiently, effective. Among these structures, the HashMap stands out as a powerful utility that provides fast data retrieval Whether you're a novice learning the ropes or an experienced developer seeking to refresh your knowledge, diving into the inner workings of HashMap can enrich your programming skills. This article will explore what a HashMap is, how it functions internally, and why it is so widely used in Java applications.

30 Advanced Java Interview Questions and Answers

When preparing for Java interviews, it's crucial to focus on Core Java questions. However, preparing for advanced Java questions is equally important. Advanced Java plays a significant role in web application development, so understanding it is very important and essential. In this article, I will share some of the most frequently asked advanced Java interview questions and their answers.

Java and Spring Boot Interview Questions for 3 Years Experience

For every Java developer, it's essential to be well-prepared with knowledge of common Java interview questions before attending an interview. Each day, countless candidates apply for jobs and face interviews, making it the interviewer's responsibility to select the best talent from the pool of job seekers. and As a job seeker, it's your responsibility to be prepared to answer most of the questions asked by the interviewer.

In this article, I am going to share some of the mostly asked Java and Spring boot interview questions for 3 years of experienced Java developers. 

Mostly Asked Spring Interview Questions

In this article, we are going to delve into some of the most frequently asked Spring interview questions along with their answers. As we know spring framework is a very popular framework for developing Java applications, So while giving Java interviews interviewers ask most of the questions on the spring framework. Here, we are not going to make it complicated; rather, we are going to explain these questions with their answers in a nutshell. So that it will help you to easily prepare for the responses you should provide in your Java-related interviews.

Java Basic Interview Questions for Freshers

In this post, we will explore some of the most frequently asked basic Java interview questions. It contains interview questions from different Java topics like strings, threads, servlets, OOPs etc. These questions are easy to answer and it will also enhance your confidence and help you ace your Java interviews.

Java Program to Perform All Arithmetic Operations

In the world of programming, learning basic tasks like adding, mutiplying, deviding two numbers is a starting point for every beginner. So, in this post, we are going to explore how to perform all arithmetic operations using two numbers in Java, with a step-by-step explanation of the program. But before delving into that, you need to understand what the Arithmetic Operators in Java are.

There are total five arithmetic operators in Java as shown in below image:

Java Program to Check Given Number is Even or Odd

In this post, we are going to see two ways to print whether a given number is even or odd in Java. First one is using if-else statements, and another one without using if-else statements, using the ternary operator in Java. So, let's dive into the discussion of how to check whether a given number is even or odd.

Step by Step logic of the given Program:

1. First Create a Scanner class object to accept input from user.
2. Accept input from user and store that in variable called num.