?? dailyiterator.java
字號:
package com.j2ee.schedule;
import java.util.Calendar;
import java.util.Date;
/**
* A DailyIterator class returns a sequence of dates on subsequent days
* representing the same time each day.
*/
public class DailyIterator implements ScheduleIterator
{
private final int hourOfDay, minute, second;
private final Calendar calendar = Calendar.getInstance();
public DailyIterator(int hourOfDay, int minute, int second)
{
this(hourOfDay, minute, second, new Date());
}
public DailyIterator(int hourOfDay, int minute, int second, Date date)
{
this.hourOfDay = hourOfDay;
this.minute = minute;
this.second = second;
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, second);
calendar.set(Calendar.MILLISECOND, 0);
if (!calendar.getTime().before(date))
{
calendar.add(Calendar.DATE, -1);
}
}
public Date next()
{
calendar.add(Calendar.DATE, 1);
//calendar.add(Calendar.MINUTE, 30);
return calendar.getTime();
}
}
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