ASN1Absent (Bouncy Castle Library 1.85 API Specification)
Date: 2026-07-12

org.bouncycastle.asn1

## Class ASN1Absent

- java.lang.Object
- - org.bouncycastle.asn1.ASN1Object
  - - org.bouncycastle.asn1.ASN1Primitive
    - - org.bouncycastle.asn1.ASN1Absent

- All Implemented Interfaces:
    ASN1Encodable, Encodable

      public class ASN1Absent
      extends ASN1Primitive

  An ASN1 class that encodes to nothing, used in the OER library to deal with the Optional type.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static ASN1Absent` | `INSTANCE`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `hashCode()`

    - ### Methods inherited from class org.bouncycastle.asn1.ASN1Primitive

      `encodeTo, encodeTo, equals, equals, equals, fromByteArray, fromStream, toASN1Primitive`

    - ### Methods inherited from class org.bouncycastle.asn1.ASN1Object

      `getEncoded, getEncoded, hasEncodedTagValue`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### INSTANCE

          public static final ASN1Absent INSTANCE

  - ### Method Detail

    - #### hashCode

          public int hashCode()

      Specified by:
        `hashCode` in class `ASN1Primitive`