This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Depends on what answer you want how many days between monday and friday - 5? how many days between 15th and 19th - 4? actual days in-between 15th and 19th = 3 You can convert the dates to milliseconds, then subtract dt1 from dt2, then convert the result back to days. Here's a way where you can easily change the code, depending on the output you want.