Java Problem

[p3n]

We were told to write this program which takes the date and tells you which day of the week it is:

import java.util.*;
import java.text.*;
import java.io.*;

class FindDayOfWeek {

	public static void main( String[] args ) throws IOException {
		
		String inputStr;
		int year, month, day;
		
		GregorianCalendar cal;
		SimpleDateFormat sdf;
		
		BufferedReader bufReader;
		
		bufReader = new BufferedReader(
					new InputStreamReader( System.in) );
	
		System.out.print("Year (yyyy): ");
		inputStr = bufReader.readLine();
		year     = Integer.parseInt(inputStr);
		
		System.out.print("Month (1-12): ");
		inputStr = bufReader.readLine();
		month    = Integer.parseInt(inputStr);
				
		System.out.print("Day (1-31): ");
		inputStr = bufReader.readLine();
		day     = Integer.parseInt(inputStr);
		
		cal = new GregorianCalendar(year, month-1, day);
		sdf = new SimpleDateFormat("EEEE");
		
		System.out.print("");
		System.out.print("Day of Week: " + sdf.format(cal.getTime()));
		
		
	}

}

Then change it so it only had one input, easy enough but no when the input is in mm/dd/yyyy format, you need to remove the slashes to get it to work, I thought I could but The prog doesnt work properly, anyway this is what ive tried:

import java.util.*;
import java.text.*;
import java.io.*;

class FindDayOfWeekOneInput {

	public static void main( String[] args ) throws IOException {
		
		String inputStr;
		int month, day, year;
		
		GregorianCalendar cal;
		SimpleDateFormat sdf;	
			
		BufferedReader bufReader;	
			
		bufReader = new BufferedReader( 
					new InputStreamReader( System.in));		
		String monthStr;
		String dayStr;
		String yearStr;
		
		System.out.print("Enter the Date mm/dd/yyyy: ");
		inputStr = bufReader.readLine();
			
		monthStr = inputStr.substring(0,2);
			
		dayStr = inputStr.substring(3,5);
			
		yearStr = inputStr.substring(6,10);
		
		
		month = Integer.parseInt(monthStr);
		day = Integer.parseInt(dayStr);
		year = Integer.parseInt(yearStr);
		
		cal = new GregorianCalendar(month, day, year);
		sdf = new SimpleDateFormat("EEEE");
		
		System.out.print("");
		System.out.print("Day of Week: " + sdf.format(cal.getTime()));
	}

}

Is there some easy way of doing this, am I on the right track ?!

I've modified the prog to print what the strings contain and it showed '02262004' .. which should work .. aahhh!

help!

*edit this soulda been a reply close plz!

 

[berky]

from first program:

cal = new GregorianCalendar(year, month-1, day);

from second program:

cal = new GregorianCalendar(month, day, year);


does the order have anything to do with it? i would imagine so.

 

[ameoba]

It's amazing how things break when you're not following the API...

 

[Stupendous]

The other option to break apart the string of the format mm/dd/yyyy, where mm and dd can be 1 or two digits, is use a StringTokenizer and tokenize on "/".