Module java.base

Package java.security

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 java.lang.Object

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

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(java.lang.Object)
• System.identityHashCode(java.lang.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()
• HashMap

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.