Summary Java Learning Guide for Beginners

Java Learning Guide for Beginners
What is Java?
Java is one of the world's most popular programming languages. It is used to build:

 Android applications
 Desktop applications
 Web applications
 Enterprise systems
 Games
 Banking software

Why Learn Java?

✅ Easy to learn

✅ Object-Oriented Programming (OOP)

✅ Cross-platform ("Write Once, Run Anywhere")

✅ High demand in the job market

✅ Great foundation for learning other languages




Chapter 1: Installing Java
Step 1: Install JDK

Download the Java Development Kit (JDK):

Oracle JDK Download

Step 2: Install VS Code

Visual Studio Code

Step 3: Install Java Extension Pack

Open VS Code → Extensions → Search:

Java Extension Pack

Install it.

, Chapter 2: Your First Java Program
Create a file:

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

Output:

Hello World!

Understanding the Code
public class Main

Creates a class named Main.

public static void main(String[] args)

The starting point of every Java program.

System.out.println()

Prints text to the screen.




Chapter 3: Variables
Variables store data.

public class Main {
public static void main(String[] args) {

String name = "John";
int age = 20;
double salary = 2500.50;
boolean student = true;

System.out.println(name);
}
}