Assignemnt #96

Code

/// Name: Ryan Volko
/// Period: 7
/// Program Name: Week
/// File Name: Week.java
/// Date Finished: 3/12/2015
import java.util.Scanner;

public class Week
{
	public static void main( String[] args )
	{
		Scanner keyboard = new Scanner(System.in);

		System.out.println("Welcome to Mr. Davis's fantastic birth-o-meter!");
		System.out.println();
		System.out.println("All you have to do is enter your birth date, and it will");
		System.out.println("tell you the day of the week on which you were born.");
		System.out.println();
		System.out.println("Some automatic tests....");
		System.out.println("12 10 2003 => " + weekday(12,10,2003));
		System.out.println(" 2 13 1976 => " + weekday(2,13,1976));
		System.out.println(" 2 13 1977 => " + weekday(2,13,1977));
		System.out.println(" 7  2 1974 => " + weekday(7,2,1974));
		System.out.println(" 1 15 2003 => " + weekday(1,15,2003));
		System.out.println("10 13 2000 => " + weekday(10,13,2000));
		System.out.println();

		System.out.println("Now it's your turn!  What's your birthday?");
		System.out.print("Birth date (mm dd yyyy): ");
		int mm = keyboard.nextInt();
		int dd = keyboard.nextInt();
		int yyyy = keyboard.nextInt();

		
		System.out.println("You were born on "+ weekday(mm, dd, yyyy));
	}


	public static String weekday( int mm, int dd, int yyyy )
	{
		int yy, total;
		String date = "";
        
        yy = yyyy - 1900;
        total = yy / 4;
        total = total + yy;
        total = total + dd;
        total = total + monthOffset(mm);
        
        if (isLeap(yyyy) == true && mm == 1 || mm == 2)
        {
            total--;
        }
        int remain = total % 7;

		date = WeekdayName(remain) + ", " + month_name(mm) + " " + dd + ", " + yyyy;

		return date;
	}

	 public static int monthOffset( int mm )
        	{
        		int result;
        		
                if (mm == 1)
                    result = 1;
                else if (mm == 2)
                    result = 4;
                else if (mm == 3)
                    result = 4;
                else if (mm == 4)
                    result = 0;
                else if (mm == 5)
                    result = 2;
                else if (mm == 6)
                    result = 5;
                else if (mm == 7)
                    result = 0;
                else if (mm == 8)
                    result = 3;
                else if (mm == 9)
                    result = 6;
                else if (mm == 10)
                    result = 1;
                else if (mm == 11)
                    result = 4;
                else if (mm == 12)
                    result = 6;
                else 
                    result = -1;            
        		
        		return result;
        	}
		public static String month_name( int mm )
        	{
        		String result;
        		
                if (mm == 1)
                    result = "January";
                else if (mm == 2)
                    result = "February";
                else if (mm == 3)
                    result = "March";
                else if (mm == 4)
                    result = "April";
                else if (mm == 5)
                    result = "May";
                else if (mm == 6)
                    result = "June";
                else if (mm == 7)
                    result = "July";
                else if (mm == 8)
                    result = "August";
                else if (mm == 9)
                    result = "September";
                else if (mm == 10)
                    result = "October";
                else if (mm == 11)
                    result = "November";
                else if (mm == 12)
                    result = "December";
                else
                    result = "ERROR";
                    
        		return result;
        	}
    	
            public static String WeekdayName( int remain )
            {
                String result;
                
                if (remain == 0)
                    result = "Sunday";
                else if (remain == 1)
                    result = "Monday";
                else if (remain == 2)
                    result = "Tuesday";
                else if (remain == 3)
                    result = "Wednesday";
                else if (remain == 4)
                    result = "Thursday";
                else if (remain == 5)
                    result = "Friday";
                else if (remain == 6)
                    result = "Satruday";
                else
                    result = "ERROR";
                    
                return result;
            }
	public static boolean isLeap( int year )
	{
		// years which are evenly divisible by 4 are leap years,
		// but years divisible by 100 are not leap years,
		// though years divisible by 400 are leap years
		boolean result;

		if ( year%400 == 0 )
			result = true;
		else if ( year%100 == 0 )
			result = false;
		else if ( year%4 == 0 )
			result = true;
		else
			result = false;
		
		return result;
	}
}

    

Picture of the output

Assignment 96