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 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 timestamp 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.