2.1 Writing Your First Java Program:

• Let's take your first step into the world of Java programming by writing a simple program that displays a friendly message.
• Open up your preferred text editor or integrated development environment (IDE) and follow along!

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

• In this program, we have created a class called MyFirstProgram.
• Every Java program starts with a class definition.
• Inside the class, we have a method named main. This is where the program starts executing.
• The line System.out.println("Hello, World!"); prints the message "Hello, World!" to the console. This is a simple way to display output in Java.
• To run this program, save it with a .java extension (e.g., MyFirstProgram.java).
• Open a command prompt or terminal, navigate to the folder containing the file, and use the following commands:

javac MyFirstProgram.java  // Compiles the program

java MyFirstProgram        // Runs the program

2.2 Understanding Basic Syntax and Structure:

Java has a specific syntax and structure that you need to understand. Here are a few key points:

• Case Sensitivity: Java is case-sensitive, so myVariable and myvariable are considered different variables.
• Blocks: Code in Java is organized into blocks, enclosed by curly braces {}. Blocks define the scope of variables and control flow structures like loops and conditional statements.
• Statements: Java programs are made up of statements. Each statement ends with a semicolon ;.