Java Introduction — Java interactive lesson

What is Java?

Java is a popular and powerful programming language, created in 1995.

It is owned by Oracle, and more than 3 billion devices run Java.

It is used for

Java works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc.)
It is one of the most popular programming languages in the world
It has a large demand in the current job market
It is easy to learn and simple to use
It is open-source and free
It is secure, fast and powerful
It has huge community support (tens of millions of developers)
Java is an object oriented language which gives a clear structure to programs and allows code to be reused, lowering development costs
As Java is close to C++ and C# , it makes it easy for programmers to switch to Java or vice versa

Java is often used in everyday programming tasks, like saying hello to a user:

Example

public class Main {
  public static void main(String[] args) {
    String name = "John";
    System.out.println("Hello " + name);
  }
}

By the end of this tutorial, you will know how to write basic Java programs and apply your skills to real-life examples.

You don't need any prior programming experience - just curiosity and practice!

Follow the tutorial in order. Each chapter builds on the previous one.