Create Yesterday's Date from a Date in the String Format of MM/DD/YYYY in Java

//from w  ww.  ja  v a 2s . c  o  m
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;

public class Main {

  public static void main(String[] args) throws ParseException {
    SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
    GregorianCalendar gc = new GregorianCalendar();
    java.util.Date d = sdf.parse("12/12/2003");
    gc.setTime(d);
    System.out.println("Input Date = " + sdf.format(d));
    int dayBefore = gc.get(Calendar.DAY_OF_YEAR);
    gc.roll(Calendar.DAY_OF_YEAR, -1);
    int dayAfter = gc.get(Calendar.DAY_OF_YEAR);
    if(dayAfter > dayBefore) {
        gc.roll(Calendar.YEAR, -1);
    }
    gc.get(Calendar.DATE);
    java.util.Date yesterday = gc.getTime();
    System.out.println("Yesterdays Date = " + sdf.format(yesterday));

  }

}