Quick Question on a Numerology Report

[Ti Ru]

This is a post from http://www.dreamincode.net/forums/topic/143081-numerology-report/ - I couldnt figure out how to quote it. Basically what i am trying to figure out is how to make required user input in the format, mm / dd / yyyy with spaces before and after the dashes.

import java.util.Scanner;

public class Numerology { 
    private static int month, day, year, date, numerology;  
    private static char symbol, symbol2;

    public static void main(String[] args) {  
        System.out.print("Enter your birth date (mm/dd/yyyy):");  
        Birthday();  
   }  

    //Asks for the users birthday, and goes on to check it.  
    private static void Birthday() {  
      String x = new Scanner(System.in).nextLine();  
        if (x.length() == 10) {
//Checking the length of the date is correct (so nobody enters something like "1/2/94")  
           String temp = String.valueOf(x.charAt(0)) + String.valueOf(x.charAt(1));  
           month = Integer.parseInt(temp);  
           symbol = x.charAt(2);  
           temp = String.valueOf(x.charAt(3)) + String.valueOf(x.charAt(4));  
           day = Integer.parseInt(temp);  
           symbol2 = x.charAt(5);  
           year = Integer.parseInt(String.valueOf(x.substring(6)));  
           Check();  
      } else {  
          System.out.println("Bad date: put date in the format mm/dd/yy.");  
      }  
  }  
 
     //Checks each part of the date, and start numerology if the date is correct  
     private static void Check() {  
        //Check Month is correct  
      if (month < 1 || month > 12) {  
           System.out.printf("Bad month:%d\n", month);  
           System.out.print("Enter birth date (mm/dd/yyyy):");  
           Birthday();  
        } else //Check symbols are correct  
         if (symbol != '/' || symbol2 != '/') {  
            System.out.print("Use forward slashes between mm/dd/yyyy!\n");  
            System.out.print("Enter birth date (mm/dd/yyyy):");  
            Birthday();  
        } else // Check year is correct  
        if (year < 1880 || year > 2280) {  
            System.out.printf("Bad year for %d\n", year);  
            System.out.print("Enter birth date (mm/dd/yyyy):");  
            Birthday();  
        } else if (month == 1 || month == 3 ||
                      month == 5 || month == 7 ||
                      month == 8 || month == 10 || month == 12) {  
             if (day < 1 || day > 31) {  
                System.out.printf("Bad day for %d/%d : %d\n", month, year, day);  
                System.out.print("Enter birth date (mm/dd/yyyy):");  
                Birthday();  
          }  
        } else if (month == 4 || month == 6 || month == 9 | month == 11) {  
            if (day < 1 || day > 30) {  
              System.out.printf("Bad day for %d/%d : %d\n", month, year, day);  
              System.out.print("Enter birth date (mm/dd/yyyy):");  
              Birthday();  
           }  
        } else if (month == 2) {  
           if (year % 4 == 0 || year % 400 == 0 || year == 2000) {  
               if (day < 1 || day > 29) {  
                 System.out.printf("Bad day for %d/%d : %d\n", month, year, day);  
             }  
              System.out.print("Enter birth date (mm/dd/yyyy):");  
                Birthday();  
            }  
            if (year % 4 != 0 || year % 100 == 0 || year % 400 != 0 || year != 2000) {  
               if (day < 1 || day > 28) {  
                   System.out.printf("Bad day for %d/%d : %d\n", month, year, day);  
                }  
             System.out.print("Enter birth date (mm/dd/yyyy):");  
             Birthday();  
            }  
     }  

       //Everything is good, go onto numerology.  
     Numerology();  
  }  

  //Starts numerology report  
  private static void Numerology() {  
       System.out.println(
              "Welcome to the numerology report for " + month+ "/" + day+ "/" + year);  
      date = month + day + year;  
       do {  
          date = ((date % 10) + (date / 10));  
    } while (date >= 10);  
    numerology = date;  
    switch (numerology) {  
          case 1:  
                 System.out.println(":1: Your luck is about to change so get ready! ");  
                break;  

         case 2:  
                 System.out.println(":2: Keep trying you are making it. ");  
                 break;  

             case 3:  
                 System.out.println(":3: It's time to relax! ");  
                 break;  

            case 4:  
                 System.out.println(":4: Money prolems are about to get solved. ");  
                 break;  

             case 5:  
                 System.out.println(":5: If you stay optimistic, your dreams will come true.");  
                 break;  

             case 6:  
                 System.out.println(":6: Although things may seem bad, don't worry.");  
                 break;  

             case 7:  
                 System.out.println(":7: You are about to find the love of your life.");  
                 break;  

            case 8:  
                 System.out.println(":8: Too much fun is not very healthy.");  
                 break;  

            case 9:  
                 System.out.println(":9: Something unexpected will happen today.");  
                 break;  
         }  
    }  
 } 

Thanks!

[Steve Fahlbusch]

Ok,

Do you really want the user to input MMb/bDDb/bYYYY (where b is blank or space)

OR

Do you simply want the report to output as above?


If you want to user to input spaces, why?

-steve

[Joanne Neal]

Ti Ru wrote:Basically what i am trying to figure out is how to make required user input in the format, mm / dd / yyyy with spaces before and after the dashes.

That code assumes there will be no spaces around the slashes (not dashes).
So if you want the user to enter spaces then you need to change lines 32 - 44 of your code.
The length of the line will no longer be 10 and you will have to check for spaces either side of where you currently set the values of symbol and symbol2.

Having said all that, you would actually be better off looking at the SimpleDateFormat class which will do all of this for you.

[Ti Ru]

Its a requirment for the class. How would i go about accounting for the spaces before and after the dashes? Would the below code work?

mm / dd / yyyy
012345678910111213

 if (x.length() == 13) { //Checking the length of the date is correct (so nobody enters something like "1/2/94")     
  
           String temp = String.valueOf(x.charAt(0)) + String.valueOf(x.charAt(1));     
  
            month = Integer.parseInt(temp);     
  
           symbol = x.charAt(3);     
  
            temp = String.valueOf(x.charAt(5)) + String.valueOf(x.charAt(6));     
  
           day = Integer.parseInt(temp);     
  
           symbol2 = x.charAt(8);     
  
           year = Integer.parseInt(String.valueOf(x.substring(10))); 

[Campbell Ritchie]

Welcome to the Ranch and well done finding the code button. But your indentation is inconsistent and you have too many blank lines. We have some suggestions about indentation, etc. You will find more help if you look at the first and second links in this previous post.

I shall see if I can improve your indentation, as well as breaking the longer lines, so you can see the way to do it.

[Campbell Ritchie]

I have tried to improve the indentation.
Why are all your methods static? You should create a field for date (or day month year) and use non‑static methods.
Don't call the Birthday method so often. Make the check method return a boolean for valid date, and you can then call the method once in a loop. The methods should be called birthday and check, by the way.

[Joanne Neal]

Ti Ru wrote:Would the below code work?

Have you tested it ?