Java Hello World

Java Hello World


The simplest programming language example!

//define a class HelloWorld
public class HelloWorld 
    //define a public static method in the class that make an entry point for the application.
    //It takes an array of String parameter
    public static void main(String[] args) 
        //Use the base System api to print a "Hello World" string in the standard output.
        System.out.println("Hello World"); 


In a simple Java Hello World example come into play various topics:

  • the class notion
  • the public modifiers
  • the static method modifiers
  • Array type
  • String type
  • a static method call (System.out.println(String a))

So, You have to start with an object oriented programming tutorial within java tutorial in order to start programming in java.

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