Top Description Fields Constructors Methods
sun.security.krb5.internal

public Class HostAddress

extends Object
implements Cloneable
Class Inheritance
All Implemented Interfaces
java.lang.Cloneable
Imports
sun.security.krb5.Config, .Asn1Exception, sun.security.util.*, java.net.InetAddress, .Inet4Address, .Inet6Address, .UnknownHostException, java.io.IOException, java.util.Arrays
Implements the ASN.1 HostAddress type. 
HostAddress     ::= SEQUENCE  {
        addr-type       [0] Int32,
        address         [1] OCTET STRING
}

This definition reflects the Network Working Group RFC 4120 specification available at http://www.ietf.org/rfc/rfc4120.txt.

Field Summary

Modifier and TypeField and Description
pack-priv byte[]
address

pack-priv int
addrType

private static final boolean
DEBUG

private volatile int
hashCode

private static InetAddress
localInetAddress

Constructor Summary

AccessConstructor and Description
private
HostAddress(int dummy)

public
HostAddress()

public
HostAddress(int
the value of the address type which matches the defined address family constants in the Berkeley Standard Distributions of Unix.
new_addrType, byte[]
network address.
new_address)

Creates a HostAddress from the specified address and address type.

public
HostAddress(InetAddress inetAddress)

public
HostAddress(DerValue
a single DER-encoded value.
encoding)

Constructs a host address from a single DER-encoded value.

Method Summary

Modifier and TypeMethod and Description
public byte[]

Returns:

a byte array of encoded HostAddress object.
asn1Encode()

Encodes a HostAddress object.

public Object
clone()

Overrides java.lang.Object.clone.

Creates and returns a copy of this object.
public boolean
equals(Object
the reference object with which to compare.
obj)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
private int
getAddrType(InetAddress inetAddress)

public InetAddress

Returns:

the IP address for this specified host.
getInetAddress()

Gets the InetAddress of this HostAddress.

private static synchronized InetAddress
getLocalInetAddress()

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.
public static HostAddress

Returns:

an instance of HostAddress.
parse(DerInputStream
the Der input stream value, which contains one or more marshaled value.
data, byte
tag number.
explicitTag, boolean
indicates if this data field is optional
optional)

Parses (unmarshal) a host address from a DER input stream.

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.
Inherited from java.lang.Object:
finalizegetClassnotifynotifyAllwaitwaitwait

Field Detail

addressback to summary
pack-priv byte[] address
addrTypeback to summary
pack-priv int addrType
DEBUGback to summary
private static final boolean DEBUG
hashCodeback to summary
private volatile int hashCode
localInetAddressback to summary
private static InetAddress localInetAddress

Constructor Detail

HostAddressback to summary
private HostAddress(int dummy)
HostAddressback to summary
public HostAddress() throws UnknownHostException
HostAddressback to summary
public HostAddress(int new_addrType, byte[] new_address) throws KrbApErrException, UnknownHostException

Creates a HostAddress from the specified address and address type.

Warning

called by nativeccache.c.

Parameters
new_addrType:int

the value of the address type which matches the defined address family constants in the Berkeley Standard Distributions of Unix.

new_address:byte[]

network address.

Exceptions
KrbApErrException:
if address type and address length do not match defined value.
HostAddressback to summary
public HostAddress(InetAddress inetAddress)
HostAddressback to summary
public HostAddress(DerValue encoding) throws Asn1Exception, IOException

Constructs a host address from a single DER-encoded value.

Parameters
encoding:DerValue

a single DER-encoded value.

Exceptions
Asn1Exception:
if an error occurs while decoding an ASN1 encoded data.
IOException:
if an I/O error occurs while reading encoded data.

Method Detail

asn1Encodeback to summary
public byte[] asn1Encode() throws Asn1Exception, IOException

Encodes a HostAddress object.

Returns:byte[]

a byte array of encoded HostAddress object.

Exceptions
Asn1Exception:
if an error occurs while decoding an ASN1 encoded data.
IOException:
if an I/O error occurs while reading encoded data.
cloneback to summary
public Object clone()

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression: 

x.clone() != x
will be true, and that the expression: 
x.clone().getClass() == x.getClass()
will be true, but these are not absolute requirements. While it is typically the case that: 
x.clone().equals(x)
will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

Returns:Object

a clone of this instance.

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
getAddrTypeback to summary
private int getAddrType(InetAddress inetAddress)
getInetAddressback to summary
public InetAddress getInetAddress() throws UnknownHostException

Gets the InetAddress of this HostAddress.

Returns:InetAddress

the IP address for this specified host.

Exceptions
UnknownHostException:
if no IP address for the host could be found.
getLocalInetAddressback to summary
private static synchronized InetAddress getLocalInetAddress() throws UnknownHostException
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object

Annotations
@Override
parseback to summary
public static HostAddress parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException

Parses (unmarshal) a host address from a DER input stream. This form parsing might be used when expanding a value which is part of a constructed sequence and uses explicitly tagged type.

Parameters
data:DerInputStream

the Der input stream value, which contains one or more marshaled value.

explicitTag:byte

tag number.

optional:boolean

indicates if this data field is optional

Returns:HostAddress

an instance of HostAddress.

Exceptions
Asn1Exception:
on error.
IOException:
if an I/O error occurs while reading encoded data.
toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String

a string representation of the object

Annotations
@Override