Hello.java

/*
 * Like in C#, we need boilerplate code template:
 * Every Java program has to have a class
 * it contains all our code
 * 
 * IMPORTANT NOTE: 
 * The actual file name in the system 
 * MUST match the class name in our code
 * so both are "Hello"
 */
/* 
Please be advised that all these code will be covered in details

The file name is a class with the name of Hello (Capital H)
So we should name our class file to be Hello in the code also

public => Access Specifier
class => Java Keyword for "Class"
Helle => Just our class name
*/
public class Hello {
    /*
     * function main() has void => doesn't return anything
     * 
     * static => function can run without the need to instantiate an object
     * It's the default function to be called for any Java program
     * 
     * String[] ards => an array for the command line arguments
     * it can be used if we want to receive input from the command line
     * 
     * System => Java predefined class
     * out => output stream object
     * println => method for printing in a new line
     */
    public static void main(String[] args) {
        /*
         * Like in C#, Java has the main() function
         * as an entry point to our application (program)
         * any code inside the main() will be executed automatically
         * when we run our program
         * 
         * Hint: type main then enter => VS code will complete the method
         */

        // Output the text:
        System.out.println("Hello Java!");
        System.out.println("Welcome to ou first Java project!");
    }
}