Dates and formatting them...

[rockies1]

I need to get yesterday's date and format it YYYYMMDD

I know that you can use

Date today = new Date();

to get the date, but how do I get yesterday's date and format it?

Thanks!

[Dillinger4]

import java.util.Date;
import java.text.*;

// Display todays date using a defualt format and the current
// local
// java.util.Date " a wrapper around a lond value the hold the
// number of milliseconds that have pass since midnight Janurary
// 1, 1970.

DateFormat defaultDate = DateFormat.getDateInstance();
System.out.println(defaultDate.format(new Date());

or

// display the current time using a short time format for the
// current local

DateFormat shortTime = DateFormat.getDateInstance(DateFormat.SHORT);
System.out.println(shortTimeFormat.format(new Date());

or

// use simple date format to define your own formatting template.
// java.text.SimpleDateFormat;

DateFormat myFormat = new SimpleDateFormat("yyyy.MM.dd");
System.out.println(myFormat.format(new Date());


just some formatting ideas....... im not to sure how to get yesterdays date though.

[rockies1]

Ugly, but it works...

/** You will need to add this to your import statements **/

import java.util.*;
import java.util.Date;

/** Here are the Variables **/

	java.util.Calendar  gc;
	java.util.Date  curDate;
	String  strCurDate = null;
	String fileDate = new String();

/** Here is the code **/

	gc = GregorianCalendar.getInstance ( ); // Gets the current Calendar instance
	curDate = gc.getTime ( ); // Gets the Date time part of gc
	
	SimpleDateFormat sdf2 = new SimpleDateFormat ( "yyyyMMdd" ); //sets up the correct format for the date

	long msCDate = curDate.getTime(); //Transforms the current date into miliseconds
	long msYDate = msCDate - 86400000; // Subtracts off one days worth of miliseconds
	java.util.Date yestDate = new java.util.Date (msYDate); //Transforms the miliseconds into a correect date

	fileDate = sdf2.format ( yestDate );  //Changes the date into the correct date format