Java Utililty Methods Day Next

String operationtime = dateFormat.format(new java.util.Date(date.getTime() + 24 * 60 * 60 * 1000));
return operationtime;

return addDay(date, 1);

long time = date.getTime() / 1000L + 86400L;
date.setTime(time * 1000L);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
try {
    date = format.parse(format.format(date));
} catch (Exception ex) {
    System.out.println(ex.getMessage());
return date;

long myTime;
Calendar calendar = new GregorianCalendar();
for (int i = 0; i < delay; i++) {
    myTime = (nowdate.getTime() / 1000) + i * 24 * 60 * 60;
    calendar.setTimeInMillis(myTime);
    if (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY
            && calendar.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
        nowdate.setTime(myTime * 1000);
...

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
    long time = format.parse(date).getTime();
    Calendar cal = Calendar.getInstance();
    cal.setTimeInMillis(time);
    cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
    cal.add(Calendar.DAY_OF_MONTH, 1);
    return format.format(cal.getTime());
...

Calendar calendar = new GregorianCalendar();
String format = "yyyy-MM-dd";
if (dateStr != null && dateStr.trim().length() == 7) {
    format = "yyyy-MM";
SimpleDateFormat bartDateFormat = new SimpleDateFormat(format);
try {
    Date date = bartDateFormat.parse(dateStr);
...

return getDeltaDay(day, 1);

try {
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    String mdate = "";
    Date d = strToDate(nowdate);
    long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
    d.setTime(myTime * 1000);
    mdate = format.format(d);
    return mdate;
...

try {
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    String mdate = "";
    Date d = strToDate(nowdate);
    long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
    d.setTime(myTime * 1000);
    mdate = format.format(d);
    return mdate;
...

try {
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    String mdate = "";
    Date d = strToDate(nowdate);
    long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
    d.setTime(myTime * 1000);
    mdate = format.format(d);
    return mdate;
...