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com.lowagie.bc.asn1
Class DERIA5String  view DERIA5String download DERIA5String.java

java.lang.Object
  extended bycom.lowagie.bc.asn1.DERObject
      extended bycom.lowagie.bc.asn1.DERIA5String
All Implemented Interfaces:
DEREncodable, DERString, DERTags

public class DERIA5String
extends DERObject
implements DERString

DER IA5String object - this is an ascii string.


Field Summary
(package private)  java.lang.String string
           
 
Fields inherited from interface com.lowagie.bc.asn1.DERTags
APPLICATION, BIT_STRING, BMP_STRING, BOOLEAN, CONSTRUCTED, ENUMERATED, EXTERNAL, GENERAL_STRING, GENERALIZED_TIME, GRAPHIC_STRING, IA5_STRING, INTEGER, NULL, NUMERIC_STRING, OBJECT_IDENTIFIER, OCTET_STRING, PRINTABLE_STRING, SEQUENCE, SEQUENCE_OF, SET, SET_OF, T61_STRING, TAGGED, UNIVERSAL_STRING, UTC_TIME, UTF8_STRING, VIDEOTEX_STRING, VISIBLE_STRING
 
Constructor Summary
DERIA5String(byte[] string)
          basic constructor - with bytes.
DERIA5String(java.lang.String string)
          basic constructor - with string.
 
Method Summary
(package private)  void encode(DEROutputStream out)
           
 boolean equals(java.lang.Object o)
          Determine whether this Object is semantically equal to another Object.
static DERIA5String getInstance(ASN1TaggedObject obj, boolean explicit)
          return an IA5 String from a tagged object.
static DERIA5String getInstance(java.lang.Object obj)
          return a IA5 string from the passed in object
 byte[] getOctets()
           
 java.lang.String getString()
           
 int hashCode()
          Get a value that represents this Object, as uniquely as possible within the confines of an int.
 
Methods inherited from class com.lowagie.bc.asn1.DERObject
getDERObject
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

string

java.lang.String string
Constructor Detail

DERIA5String

public DERIA5String(byte[] string)
basic constructor - with bytes.


DERIA5String

public DERIA5String(java.lang.String string)
basic constructor - with string.

Method Detail

getInstance

public static DERIA5String getInstance(java.lang.Object obj)
return a IA5 string from the passed in object


getInstance

public static DERIA5String getInstance(ASN1TaggedObject obj,
                                       boolean explicit)
return an IA5 String from a tagged object.


getString

public java.lang.String getString()
Specified by:
getString in interface DERString

getOctets

public byte[] getOctets()

encode

void encode(DEROutputStream out)
      throws java.io.IOException
Specified by:
encode in class DERObject

hashCode

public int hashCode()
Description copied from class: java.lang.Object
Get a value that represents this Object, as uniquely as possible within the confines of an int.

There are some requirements on this method which subclasses must follow:

  • Semantic equality implies identical hashcodes. In other words, if a.equals(b) is true, then a.hashCode() == b.hashCode() must be as well. However, the reverse is not necessarily true, and two objects may have the same hashcode without being equal.
  • It must be consistent. Whichever value o.hashCode() returns on the first invocation must be the value returned on all later invocations as long as the object exists. Notice, however, that the result of hashCode may change between separate executions of a Virtual Machine, because it is not invoked on the same object.

Notice that since hashCode is used in java.util.Hashtable and other hashing classes, a poor implementation will degrade the performance of hashing (so don't blindly implement it as returning a constant!). Also, if calculating the hash is time-consuming, a class may consider caching the results.

The default implementation returns System.identityHashCode(this)


equals

public boolean equals(java.lang.Object o)
Description copied from class: java.lang.Object
Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

  • It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
  • It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
  • It must be reflexive. a.equals(a) must always be true.
  • It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
  • a.equals(null) must be false.
  • It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a java.lang.ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a java.lang.NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, java.util.IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.