Java Program:

Example:

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

Output:

  Hello World

It's a simplest program code

Whatever you want to show in the output screen just type it after System.out.println or System.out.print inclosed with () inside " " (double quote)

System.out.println("Whatever you want to print"); //to print anything & point to next-line
System.out.print("Whatever you want to print"); //to print anything & point to same-line