com.jacob.com
Class DateUtilities

java.lang.Object
  com.jacob.com.DateUtilities

public class DateUtilities
extends Object

java / windows date conversion utilities

Author:

joe

Constructor Summary

DateUtilities()

Method Summary

static double	convertDateToWindowsTime(Date javaDate) converts a java date to a windows time object (is this timezone safe?)
static double	convertMillisecondsToWindowsTime(long milliseconds) Convert a Java time to a COM time.
static Date	convertWindowsTimeToDate(double comTime) converts a windows time to a Java Date Object
static long	convertWindowsTimeToMilliseconds(double comTime) Convert a COM time from functions Date(), Time(), Now() to a Java time (milliseconds).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DateUtilities

public DateUtilities()

Method Detail

convertWindowsTimeToDate

public static Date convertWindowsTimeToDate(double comTime)

converts a windows time to a Java Date Object

Parameters:

comTime -

Returns:

Date object representing the windows time as specified in comTime

convertWindowsTimeToMilliseconds

public static long convertWindowsTimeToMilliseconds(double comTime)

Convert a COM time from functions Date(), Time(), Now() to a Java time (milliseconds). Visual Basic time values are based to 30.12.1899, Java time values are based to 1.1.1970 (= 0 milliseconds). The difference is added to the Visual Basic value to get the corresponding Java value. The Visual Basic double value reads: .<1 day percentage fraction>, e.g. "38100.6453" means: 38100 days since 30.12.1899 plus (24 hours * 0.6453). Example usage: Date javaDate = new Date(toMilliseconds (vbDate));.

Parameters:

comTime - COM time.

Returns:

Java time.

convertDateToWindowsTime

public static double convertDateToWindowsTime(Date javaDate)

converts a java date to a windows time object (is this timezone safe?)

Parameters:

javaDate - the java date to be converted to windows time

Returns:

the double representing the date in a form windows understands

convertMillisecondsToWindowsTime

public static double convertMillisecondsToWindowsTime(long milliseconds)

Convert a Java time to a COM time.

Parameters:

milliseconds - Java time.

Returns:

COM time.