This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
Welcome to the Java Ranch, Chennarao. Date's are not in a particular format. They represent a point in time. To format a date, one uses other classes like java.text.DateFormat. There's a chapter in the Java Tutorial on Formatting Dates and Times that you may find instructive.