what is hello world java

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

public class HelloWorld { 
   public static void main(String []args) {
      /* println() function to write Hello, World! */
      System.out.println("Hello, World!");     
   }
}

public class Main {

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

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

public class Hello
{
  	public static void main(String[] args)
    {
      /*Tip System.out.println(); shortcut Type 'sysout'and press Tab */
      System.out.println("Hello world!");
    }
}

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

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

// This is just a line of code, but publilc class.... is needed!
        System.out.println("This will be printed");

// Your First Program

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