public Date() {
    this(System.currentTimeMillis());
}
public Date(long date) {
    fastTime = date;
}
@Deprecated
public Date(int year, int month, int date) {
    this(year, month, date, 0, 0, 0);
}
@Deprecated
public Date(int year, int month, int date, int hrs, int min) {
    this(year, month, date, hrs, min, 0);
}
@Deprecated
public Date(int year, int month, int date, int hrs, int min, int sec) {
    int y = year + 1900;
    // month is 0-based. So we have to normalize month to support Long.MAX_VALUE.
    if (month >= 12) {
        y += month / 12;
        month %= 12;
    } else if (month < 0) {
         y += CalendarUtils.floorDivide(month, 12);
        month = CalendarUtils.mod(month, 12);
    }
    BaseCalendar cal = getCalendarSystem(y);
    cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
    cdate.setNormalizedDate(y, month + 1, date).setTimeOfDay(hrs, min, sec, 0);
    getTimeImpl();
    cdate = null;
}

system.currenttimemillis

you can see it compare to system.currenttimemillis,waste time

find zheng minute

system.currenttimemillis % (60*1000)<1000

this will get the zheng minute