Java.util.Date Class


The java.util.Date class represents a specific instant in time, with millisecond precision.

Class declaration

Following is the declaration for java.util.Date class −

public class Date
   extends Object
   implements Serializable, Cloneable, Comparable<Date>

Class constructors

Sr.No. Constructor & Description


This constructor allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.


Date(long date)

This constructor allocates a Date object and initializes it to represent the specified number of milliseconds since the standard base time known as "the epoch", namely January 1, 1970, 00:00:00 GMT.

Class methods

Sr.No. Method & Description
1 boolean after(Date when)

This method tests if this date is after the specified date.

2 boolean before(Date when)

This method tests if this date is before the specified date.

3 Object clone()

This method return a copy of this object.

4 int compareTo(Date anotherDate)

This method compares two Dates for ordering.

5 boolean equals(Object obj)

This method compares two dates for equality.

6 long getTime()

This method returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object.

7 int hashCode()

This method returns a hash code value for this object.

8 void setTime(long time)

This method sets this Date object to represent a point in time that is time milliseconds after January 1, 1970 00:00:00 GMT.

9 String toString()

This method converts this Date object to a String of the form.

Methods inherited

This class inherits methods from the following classes −

  • java.util.Object