How to print Hello World! in JAVA language

How to print Hello World! :

Let's start by creating a simple program that prints “Hello World” to the screen.

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

In Java, every line of code that can actually run needs to be inside a class.
In our example, we named the class MyClass. You will learn more about classes in the upcoming modules.

In Java, each application has an entry point, or a starting point, which is a method called main. Along with main, the keywords public and static will also be explained later.

The main Method

To run our program, the main method must be identical to this signature:

public static void main(String[ ] args)


-> public: anyone can access it
-> static: method can be run without creating an instance of the class containing the main method
-> void: method doesn't return any value
-> main: the name of the method

For example, the following code declares a method called test, which does not return anything and has no parameters:

Void test()

System.out.println()

Next is the body of the main method, enclosed in curly braces:

{
   System.out.println("Hello World!");
}


The println method prints a line of text to the screen.
The System class and its out stream are used to access the println method.

Semicolons in Java

You can pass a different text as the parameter to the println method to print it.

class MyClass {
    public static void main(String[ ] args) {
        System.out.println("I am learning Java");
    }
}

In Java, each code statement must end with a semicolon.