☕ What is Java?

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

It is widely used because it is:

• Platform independent (Write once, run anywhere)
• Secure
• Powerful and scalable

🧠 Basic Java Structure

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

This is the simplest Java program that prints output.

📦 Variables in Java

int age = 20;
String name = "Adiba";
double price = 99.5;
        

Variables store data like numbers and text.

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