CONVERT THE DAY TO THE CORRESPONDING DAY ALGORITHM.
I AM WRITIBG THE JAVA CODE FOR THE OUTPUT OF THE CORRESPONDING DAY OF
THE YEAR FOR THE GIVEN DATE.
THE CODE SHOULD BE ABLE TO GIVE THE CORRESPONDING DAY FOR THE DATE FEEDED IN .
THE ANSWER TO BE ACCEPTABLE IN THE FORM OF PUR JAVA CODe only.
Thanks and Regards
http://skatiyar.com

Hi,

Here is sample code for getting day of the year for any given date..... 

Eg: to run the code as 
   java Demo 23/10/2003

================================
public class Demo
{
	public static void main( String args[] )
	{
		if(args[0].length() == 0)
		{
			System.out.println( "Enter Date in DD/MM/YYYY format and run the code...." );
			return 1;
		}
		
		getDayOfYear(args[0]);
	}
	
	private int getDayOfYear(String x)
	{
		String[] td = x.split("/");
		if( td.length != 3 )
		{
			System.out.println( "Enter Date in DD/MM/YYYY format and run the code...." );
			return 1;
		}
		
		int month = Integer.parseInt( td[1] );
		int days = Integer.parseInt( td[0] );
		int year = Integer.parseInt( td[2] );
		
		for( int m = month - 1; i >= 1; i-- )
		{
			switch (m) 
			{
	            case 1:
	            case 3:
	            case 5:
	            case 7:				
	            case 8:
	            case 10:
	            case 12:
					days += 31;
					break;
	            case 4:
	            case 6:
	            case 9:
	            case 11:
	                days += 30;
	                break;
	            case 2:
	                if ( ((year % 4 == 0) && !(year % 100 == 0)) || (year
% 400 == 0) )
	                    days += 29;
	                else
	                    days += 28;
	                break;
	        }
		}
		
		System.out.println( "Day of the year is:" + days );
	}
}
================================================


As i don't have java compiler in my system.. i didn't compile and test
the code... Plz rectify any syntax errors.....

Thanks,
V. Thandava Krishna

try this one plz... i rectified one typing mistake....

======================
public class Demo
{
	public static void main( String args[] )
	{
		if(args[0].length() == 0)
		{
			System.out.println( "Enter Date in DD/MM/YYYY format and run the code...." );
			return 1;
		}
		
		getDayOfYear(args[0]);
	}
	
	private int getDayOfYear(String x)
	{
		String[] td = x.split("/");
		if( td.length != 3 )
		{
			System.out.println( "Enter Date in DD/MM/YYYY format and run the code...." );
			return 1;
		}
		
		int month = Integer.parseInt( td[1] );
		int days = Integer.parseInt( td[0] );
		int year = Integer.parseInt( td[2] );
		
		for( int m = month - 1; m >= 1; m-- )
		{
			switch (m) 
			{
	            case 1:
	            case 3:
	            case 5:
	            case 7:				
	            case 8:
	            case 10:
	            case 12:
					days += 31;
					break;
	            case 4:
	            case 6:
	            case 9:
	            case 11:
	                days += 30;
	                break;
	            case 2:
	                if ( ((year % 4 == 0) && !(year % 100 == 0)) || (year
% 400 == 0) )
	                    days += 29;
	                else
	                    days += 28;
	                break;
	        }
		}
		
		System.out.println( "Day of the year is:" + days );
	}
}
========================

Thanks,
V. Thandava Krishna

import java.util.Calendar;
import java.util.Date;
import java.text.SimpleDateFormat;

public class Test{
  public static void main(String[] args)
  throws Exception {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(new SimpleDateFormat("MM/dd/yyyy").parse(args[0]));
    System.out.println(calendar.get(Calendar.DAY_OF_YEAR));
  }
}

Hey . This code might help you

import java.util.Date;

public class Test
{
  public static void main(String[] args) throws Exception
  {
    Date calendar = new
Date(Integer.parseInt(args[0])-1900,Integer.parseInt(args[1])-1,Integer.parseInt(args[2]));
    //Date calendar = new Date(d.getYear()-1900,d.getMonth()-1,d.getDate());
    int day = calendar.getDay();
    switch(day)
    {
        case 0:
            System.out.println(calendar.toString() + " is a Sunday");
            break;
        case 1:
            System.out.println(calendar.toString() + " is a Monday");
            break;
        case 2:
            System.out.println(calendar.toString() + " is a Tuesday");
            break;
        case 3:
            System.out.println(calendar.toString() + " is a Wednesday");
            break;
        case 4:
            System.out.println(calendar.toString() + " is a Thursday");
            break;
        case 5:
            System.out.println(calendar.toString() + " is a Friday");
            break;
        case 6:
            System.out.println(calendar.toString() + " is a Saturday");
            break;
        default:
            System.out.println("Not a valid date");
            break;
   }
   System.out.println(calendar.getDay());
  }
}

The sample run of this program is here.

$ java Test 2005 02 28
Mon Feb 28 00:00:00 EST 2005 is a Monday
1

Here 2005 is the year, 02 is the month and 28 is the date.

Let me know if u have any problems.
Thanks
Prashanth