Quick introduction to Java Programming language - Part 1

The Java.util package contains Date class which encapsulates current time and date.There are two constructors for date class, one initialize current date time of system and other accepts long millisecond from midnight January 1, 1970.

Date( )
Date(long millisec)

Some of the date object’s methods are:

Getting Current Date & Time in Java

import java.util.Date;
  public class DateExample {
   public static void main(String args[]) {
         Date newdate = new Date();
		 System.out.println(newdate.toString());
   }
}

Output : Sat Feb 21 09:45:34 CDT 2015

Above code returns the current system date and display it in string format.

Date Formatting using SimpleDateFormat:

public class DateExample {
   public static void main(String args[]) {
		Date dtNow = new Date( );
		SimpleDateFormatdtfrmt = new SimpleDateFormat ("E yyyy.MM.dd 'at' hh:mm:ss a zzz");
		System.out.println(dtfrmt .format(dtNow));
   }
}

Output : Sun 2015.02.21 at 04:15:01 PM PDT

The SimpleDateFormat class is used for parsing and formatting dates .