JAVA time date handles class instances

This article illustrates the JAVA time and date handling class, which is used to walk through each day between two dates. Share with you for your reference. The details are as follows:

import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class AccountDate {
 private static transient int gregorianCutoverYear = 1582;
 
 private static final int[] DAYS_P_MONTH_LY= {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
 private static final int[] DAYS_P_MONTH_CY= {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
 private static final int Y = 0, M = 1, D = 2;
 
 public static int[] splitYMD(String date){
  date = date.replace("-", "");
  int[] ymd = {0, 0, 0};
  ymd[Y] = Integer.parseInt(date.substring(0, 4));
  ymd[M] = Integer.parseInt(date.substring(4, 6));
  ymd[D] = Integer.parseInt(date.substring(6, 8));
  return ymd;
 }
 
 public static boolean isLeapYear(int year) {
  return year >= gregorianCutoverYear ?
   ((year%4 == 0) && ((year%100 != 0) || (year%400 == 0))) : (year%4 == 0); 
 }
 
 private static int[] addOneDay(int year, int month, int day){
  if(isLeapYear( year )){
   day++;
   if( day > DAYS_P_MONTH_LY[month -1 ] ){
    month++;
    if(month > 12){
     year++;
     month = 1;
    }
    day = 1;
   }
  }else{
   day++;
   if( day > DAYS_P_MONTH_CY[month -1 ] ){
    month++;
    if(month > 12){
     year++;
     month = 1;
    }
    day = 1;
   }
  }
  int[] ymd = {year, month, day};
  return ymd;
 }
 
 public static String formatMonthDay(int decimal){
  DecimalFormat df = new DecimalFormat("00");
  return df.format( decimal );
 }
 
 public static String formatYear(int decimal){
  DecimalFormat df = new DecimalFormat("0000");
  return df.format( decimal );
 }
 
 public static long countDay(String begin,String end){
   SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
   Date beginDate , endDate;
   long day = 0;
   try {
   beginDate= format.parse(begin);
   endDate= format.parse(end);
   day=(endDate.getTime()-beginDate.getTime())/(24*60*60*1000); 
  } catch (ParseException e) {
   e.printStackTrace();
  }    
   return day;
 }
 
 public static List<String> getEveryday(String beginDate , String endDate){
  long days = countDay(beginDate, endDate);
  int[] ymd = splitYMD( beginDate );
  List<String> everyDays = new ArrayList<String>();
  everyDays.add(beginDate);
  for(int i = 0; i < days; i++){
   ymd = addOneDay(ymd[Y], ymd[M], ymd[D]);
   everyDays.add(formatYear(ymd[Y])+"-"+formatMonthDay(ymd[M])+"-"+formatMonthDay(ymd[D]));
  }
  return everyDays;
 }
 public static void main(String[] args) {
  List<String> list = AccountDate.getEveryday("2008-08-29", "2008-09-02");
  for (String result : list) {
   System.out.println(result);
  }
 }
}

I hope this article has been helpful to your Java programming.