Setting Up IntelliJ IDEA

Going forward, I will be using IntelliJ IDEA by Jetbrains as my IDE of choice during demos. However, this is not the only choice available - some good alternatives include Eclipse, Netbeans, and Visual Studio Code. Of course, you are not forbidden to use a different code editor you're already familiar with, as long as you are able to write Java programs with it.

Here are some video tutorials on how to install IntelliJ IDEA in your machine.

IntelliJ Installation

How to Install IntelliJ in Windows

How to Install IntelliJ in macOS

How to Install IntelliJ in Linux

Upon installing IntelliJ IDEA in your machine, there are a few configurations you will need to carry out before starting to use IntelliJ IDEA. The following video tutorial will help you get to speed in setting up IntelliJ IDEA before starting to program.

IntelliJ Configuration on Mac, Linux and Windows

Testing IntelliJ IDEA

Create different Java files to contain each of the following code snippets. Ensure that the code runs properly.

Demo1

public class Demo1 {
    public static void main(String[] args) {
        System.out.println("Welcome ");
        System.out.println("To ");
        System.out.println("OOP Class");
    }
}

Demo2

public class Demo2 {
    public static void main(String[] args) {
        System.out.println("3.5 * 4 / 2 - 2.5 is ");
        System.out.println(3.5 * 4 / 2 - 2.5);
    }
}