Simple program to make your friends think your smart.

BirthdayGame.java

import java.util.Scanner;
public class Birthday
{
    public static void main (String[] args)
    {
     double number;
     double birthday;
     
     
      Scanner scan = new Scanner(System.in);
      
     //inport number
     number = scan.nextDouble();
     
     //Directions
     System.out.print ("\tSteps:" + "\nFirst, take your month number and multiply that by 5." + "\nNext, add 6 to that number." + "\nThen, multiply that number by 4." + "\nAfter, add 9 to that number." + "\nNow, multiply that number by 5." + "\nLastly, add your birthdate day to the number." + "\n\n Input your number:");
     System.out.println (number);
     
     //Caculate Birthdate
     
     birthday = (number - 165) / 100;
     System.out.println ("Your Birthday is:  " + birthday);
   
    }
}