November 2006
Intermediate to advanced
224 pages
3h 29m
English
Content preview from Java™ Phrasebook
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Calculating the Difference Between Two Dates
long time1 = date1.getTime(); long time2 = date2.getTime(); long diff = time2 – time1; System.out.println("Difference in days = " + diff/(1000*60*60*24)); |
This phrase converts two date objects, date1 and date2, into milliseconds—each represented as a long. The difference is calculated by subtracting time1 from time2. We then print out the calculated difference in days by performing the arithmetic necessary to convert the millisecond difference into days difference.
Many times, you will want to know the time difference between two dates. A good example of this is in calculating how many days are left before an item is set to expire. If you have the expiration date of an item, you can calculate the days ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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