Java Utililty Methods Day From

List of utility methods to do Day From

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Day From

Description

The list of methods to do Day From are organized into topic(s).

Method

Date calculateDate(Date startDay, int days)
calculate Date

Calendar cal = Calendar.getInstance();
cal.setTime(startDay);
cal.add(Calendar.DAY_OF_YEAR, days);
return cal.getTime();

long calculatorStartTimeOnDay(Date date)
calculator Start Time On Day

Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTimeInMillis();

long clearDay(long timeInMillis)
clear Day

Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(timeInMillis);
cal.set(Calendar.MILLISECOND, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.HOUR_OF_DAY, 0);
return cal.getTimeInMillis();

boolean CompareDay(Date orgin, Date target)
Compare Day

long interval = target.getTime() - orgin.getTime();
return (int) (interval / (24 * 60 * 60 * 1000)) < OneDay;

Date convertYYMMDDToDate(int y, int m, int d, boolean beginning_of_day)
convert YYMMDD To Date

if (m < 0 || m > 11)
 m = 0;
if (d < 0 || d > 30)
 d = 0;
GregorianCalendar c = new GregorianCalendar();
c.set(Calendar.YEAR, y);
c.set(Calendar.MONTH, m);
c.set(Calendar.DATE, d);
...

Date createInDays(final Date from, final int amount)
create In Days

final Calendar cal = Calendar.getInstance();
cal.setTime(from);
cal.add(Calendar.DATE, amount);
return cal.getTime();

Integer day(Integer time)
day

int day = (int) Math.floor(time / 86400);
return day;

int dayFromDateValue(long x)
Get the day of month from a date value.

return (int) (x & 31);

long dayNumberToTimestamp(short dateNumber)
day Number To Timestamp

return dateNumber * (1000L * 60 * 60 * 24);

int days(int d)
days

return d * hours(24);