package AutoProgram;
import java.util.Calendar;
import java.util.Date;
/**
*
* @author Uaslei
*/
public class OleDate {
private Calendar calendar = Calendar.getInstance();
public Calendar getCalendar() {
return calendar;
}
public Date getDate() {
return calendar.getTime();
}
public OleDate() {
}
public OleDate(int year, int month, int date) {
calendar.set(year, month, date);
//super(year, month, date);
}
public OleDate(int year, int month, int date, int hrs, int min, int sec) {
calendar.set(year, month, date, hrs, min, sec);
//super(year, month, date, hrs, min, sec);
}
public OleDate(long date) {
calendar.setTimeInMillis(date);
//super(date);
}
public OleDate(double date) {
setDate(date);
}
// Source code copied from MFC 4.21 and modified
// Half a second, expressed in days
static double HALF_SECOND = (1.0 / 172800.0);
public final void setDate(double dtSrc) {
// source code copied from MFC 4.21 and modified
long nDays; // Number of days since Dec. 30, 1899
long nDaysAbsolute; // Number of days since 1/1/0
long nSecsInDay; // Time in seconds since midnight
long nMinutesInDay; // Minutes in day
long n400Years; // Number of 400 year increments since 1/1/0
long n400Century; // Century within 400 year block (0,1,2 or 3)
long n4Years; // Number of 4 year increments since 1/1/0
long n4Day; // Day within 4 year block
// (0 is 1/1/yr1, 1460 is 12/31/yr4)
long n4Yr; // Year within 4 year block (0,1,2 or 3)
boolean bLeap4 = true; // TRUE if 4 year block includes leap year
// values in terms of year month date.
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
double dblDate = dtSrc; // temporary serial date
// If a valid date, then this conversion should not overflow
nDays = (long) dblDate;
// Round to the second
dblDate += ((dtSrc > 0.0) ? HALF_SECOND : -HALF_SECOND);
// Add days from 1/1/0 to 12/30/1899
nDaysAbsolute = (long) dblDate + 693959L;
dblDate = Math.abs(dblDate);
nSecsInDay = (long) ((dblDate - Math.floor(dblDate)) * 86400.);
// Leap years every 4 yrs except centuries not multiples of 400.
n400Years = (long) (nDaysAbsolute / 146097L);
// Set nDaysAbsolute to day within 400-year block
nDaysAbsolute %= 146097L;
// -1 because first century has extra day
n400Century = (long) ((nDaysAbsolute - 1) / 36524L);
// Non-leap century
if (n400Century != 0) {
// Set nDaysAbsolute to day within centurY
nDaysAbsolute = (nDaysAbsolute - 1) % 36524L;
// +1 because 1st 4 year increment has 1460 days
n4Years = (long) ((nDaysAbsolute + 1) / 1461L);
if (n4Years != 0) {
n4Day = (long) ((nDaysAbsolute + 1) % 1461L);
} else {
bLeap4 = false;
n4Day = (long) nDaysAbsolute;
}
} else {
// Leap century - not special case!
n4Years = (long) (nDaysAbsolute / 1461L);
n4Day = (long) (nDaysAbsolute % 1461L);
}
if (bLeap4) {
// -1 because first year has 366 days
n4Yr = (n4Day - 1) / 365;
if (n4Yr != 0) {
n4Day = (n4Day - 1) % 365;
}
} else {
n4Yr = n4Day / 365;
n4Day %= 365;
}
tm_year = (int) (n400Years * 400 + n400Century * 100 + n4Years * 4 + n4Yr);
// Handle leap year: before, on, and after Feb. 29.
if (n4Yr == 0 && bLeap4 && n4Day == 59) {
/* Feb. 29 */
tm_mon = 2;
tm_mday = 29;
} else {
if (n4Yr == 0 && bLeap4 && n4Day >= 59) {
--n4Day;
}
// Make n4DaY a 1-based day of non-leap year and compute
// month/day for everything but Feb. 29.
++n4Day;
// Month number always >= n/32, so save some loop time
for (tm_mon = (int) ((n4Day % 5) + 1); n4Day > rgMonthDays[tm_mon]; tm_mon++) {
}
tm_mday = (int) (n4Day - rgMonthDays[tm_mon - 1]);
}
if (nSecsInDay == 0) {
tm_hour = tm_min = tm_sec = 0;
} else {
tm_sec = (int) (nSecsInDay % 60L);
nMinutesInDay = nSecsInDay / 60L;
tm_min = (int) (nMinutesInDay % 60);
tm_hour = (int) (nMinutesInDay / 60);
}
calendar.set(Calendar.YEAR, tm_year - 1900);
calendar.set(Calendar.MONTH, tm_mon - 1);
calendar.set(Calendar.DATE, tm_mday);
calendar.set(Calendar.HOUR, tm_hour);
calendar.set(Calendar.MINUTE, tm_min);
calendar.set(Calendar.SECOND, tm_sec);
}
// source code copied from MFC 4.21 and modified
static int rgMonthDays[] = {0, 31, 59, 90, 120, 151, 181, 212, 243,
273, 304, 334, 365};
public double toDouble() {
// source code copied from MFC 4.21 and modified.
int wYear = calendar.get(Calendar.YEAR) + 1900;
int wMonth = calendar.get(Calendar.MONTH) + 1;
int wDay = calendar.get(Calendar.DATE);
int wHour = calendar.get(Calendar.HOUR);
int wMinute = calendar.get(Calendar.MINUTE);
int wSecond = calendar.get(Calendar.SECOND);
// Check for leap year and set the number of days in the month
boolean bLeapYear = ((wYear & 3) == 0)
&& ((wYear % 100) != 0 || (wYear % 400) == 0);
int nDaysInMonth = rgMonthDays[wMonth] - rgMonthDays[wMonth - 1]
+ ((bLeapYear && wDay == 29 && wMonth == 2) ? 1 : 0);
// Cache the date in days and time in fractional days
long nDate;
double dblTime;
// It is a valid date; make Jan 1, 1AD be 1
nDate = wYear * 365L + wYear / 4 - wYear / 100 + wYear / 400
+ rgMonthDays[wMonth - 1] + wDay;
// If leap year and it's before March, subtract 1:
if (wMonth >= 2 && bLeapYear) {
--nDate;
}
// Offset so that 12/30/1899 is 0
nDate -= 693959L;
dblTime = (((long) wHour * 3600L) + // hrs in seconds
((long) wMinute * 60L) + // mins in seconds
((long) wSecond)) / 86400.;
double dtDest = (double) nDate + ((nDate >= 0) ? dblTime : -dblTime);
return dtDest;
}
}
Depois vc pode passar esse codigo para conversão
GregorianCalendar gc = new GregorianCalendar();
txtData.setText(Data.formatoDataSimples.format(gc.getTime()));
txtData1.setText(Data.formatoDataSimples.format(gc.getTime()));
datas = new java.sql.Date(Data.formatoDataSimples.parse(txtData.getText()).getTime());