Java Tutorial

Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems.

Java is a platform-independent language, which means code written in Java can run on any device that supports the Java Virtual Machine (JVM).
Syntax and structure are similar to C-based languages like C++ and C#.

Hello World Program

The following is a simple program that displays the message “Hello, World!” on the screen.

public class Geeks{
    public static void main(String[] args) {
        System. out.println("Hello World!");
    }
}

Output

Hello World!

Basics

Understand core Java concepts such as syntax, variables, data types, loops, and decision-making to start your programming journey.

**JDK (Java Development Kit) **provides tools and libraries to develop Java applications, working with JRE and JVM.

JRE (Java Runtime Environment) offers the libraries and JVM needed to run Java programs.

JVM (Java Virtual Machine) executes the compiled Java bytecode on the system.