Arrays in Java with Coding Examples

In this post, we are going to learn about what is arrays in Java, Syntax for array in Java, How they work, and how it helps us to store multiple elements. We will also go through some simple coding examples to help you understand the concept better.

What is an Array in Java?

An array in Java is a data structure that allows us to store multiple values in a single variable. So Instead of declaring separate variables for each value, we can just create an array to store them all together in a fixed-size list. But in array, we can store only similar type of elements that simply means If we have created an integer array then we are allowed to store only integer type of elements in it and If we try to store other than integer type elements like double or String then we will get an compile time error saying incompatible types.

Strings in Java with Coding Examples

Strings are very important in Java or any other programming language because they are used to store and manipulate text data. We cannot even imagine an application or website without having text on it. In almost every application, we need to work with text data, whether it is accepting input from the user or displaying a message to the user. It is also important to know about Strings and how it works internally if you are preparing for Java interviews. So knowing about Strings in Java is very important for both students and job seekers.

In this tutorial, we will learn what is a String in Java with its different types like String, StringBuffer, and StringBuilder. 

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.