Class Timestamp

java.lang.Object

java.security.Timestamp

All Implemented Interfaces:

Serializable

public final class Timestamp
extends Object
implements Serializable

This class encapsulates information about a signed timestamp. It is immutable. It includes the timestamp's date and time as well as information about the Timestamping Authority (TSA) which generated and signed the timestamp.

Since:

1.5

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Timestamp(Date timestamp, CertPath signerCertPath)	Constructs a Timestamp.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)	Tests for equality between the specified object and this Timestamp.
CertPath	getSignerCertPath()	Returns the certificate path for the Timestamping Authority.
Date	getTimestamp()	Returns the date and time when the Timestamp was generated.
int	hashCode()	Returns the hash code value for this Timestamp.
String	toString()	Returns a string describing this Timestamp.

Methods declared in class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

Timestamp

public Timestamp(Date timestamp,
 CertPath signerCertPath)

Constructs a Timestamp.

Parameters:

timestamp - is the timestamp's date and time. It must not be null.

signerCertPath - is the TSA's certificate path. It must not be null.

Throws:

NullPointerException - if timestamp or signerCertPath is null.

Method Details

getTimestamp

public Date getTimestamp()

Returns the date and time when the Timestamp was generated.

Returns:

The timestamp's date and time.

getSignerCertPath

public CertPath getSignerCertPath()

Returns the certificate path for the Timestamping Authority.

Returns:

The TSA's certificate path.

hashCode

public int hashCode()

Returns the hash code value for this Timestamp. The hash code is generated using the date and time of the Timestamp and the TSA's certificate path.

Overrides:

hashCode in class Object

Returns:

a hash code value for this Timestamp.

See Also:

• Object.equals(Object)

equals

public boolean equals(Object obj)

Tests for equality between the specified object and this Timestamp. Two timestamps are considered equal if the date and time of their timestamp's and their signer's certificate paths are equal.

Overrides:

equals in class Object

Parameters:

obj - the object to test for equality with this Timestamp.

Returns:

true if the timestamps are considered equal, false otherwise.

See Also:

• Object.hashCode()

toString

public String toString()

Returns a string describing this Timestamp.

Overrides:

toString in class Object

Returns:

A string comprising the date and time of the Timestamp and its signer's certificate.