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Hello World: Code Explanation

Explore the core elements of the Hello World program in Java. Understand how to define a class, use the main method as the program entry point, employ print statements, and apply syntax rules necessary to write and run your first Java code.

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The Hello World! program

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

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Detailed explanation #

Now let’s look at the Hello World! sequentially.

class HelloWorld #

It is written as:

C++
class HelloWorld

Java is an object-oriented programming language. Therefore, every line that needs to be executed should be inside a class. This line ...