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Java™ Platform Standard Ed. 6 |
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java.lang.Object java.net.InetAddress java.net.Inet4Address
public final class Inet4Address
This class represents an Internet Protocol version 4 (IPv4) address. Defined by RFC 790: Assigned Numbers, RFC 1918: Address Allocation for Private Internets, and RFC 2365: Administratively Scoped IP Multicast
d.d.d.d d.d.d d.d d
When four parts are specified, each is interpreted as a byte of data and assigned, from left to right, to the four bytes of an IPv4 address.
When a three part address is specified, the last part is interpreted as a 16-bit quantity and placed in the right most two bytes of the network address. This makes the three part address format convenient for specifying Class B net- work addresses as 128.net.host.
When a two part address is supplied, the last part is interpreted as a 24-bit quantity and placed in the right most three bytes of the network address. This makes the two part address format convenient for specifying Class A network addresses as net.host.
When only one part is given, the value is stored directly in the network address without any byte rearrangement.
For methods that return a textual representation as output value, the first form, i.e. a dotted-quad string, is used.
Method Summary | |
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boolean |
equals(Object obj)
Compares this object against the specified object. |
byte[] |
getAddress()
Returns the raw IP address of this InetAddress
object. |
String |
getHostAddress()
Returns the IP address string in textual presentation form. |
int |
hashCode()
Returns a hashcode for this IP address. |
boolean |
isAnyLocalAddress()
Utility routine to check if the InetAddress in a wildcard address. |
boolean |
isLinkLocalAddress()
Utility routine to check if the InetAddress is an link local address. |
boolean |
isLoopbackAddress()
Utility routine to check if the InetAddress is a loopback address. |
boolean |
isMCGlobal()
Utility routine to check if the multicast address has global scope. |
boolean |
isMCLinkLocal()
Utility routine to check if the multicast address has link scope. |
boolean |
isMCNodeLocal()
Utility routine to check if the multicast address has node scope. |
boolean |
isMCOrgLocal()
Utility routine to check if the multicast address has organization scope. |
boolean |
isMCSiteLocal()
Utility routine to check if the multicast address has site scope. |
boolean |
isMulticastAddress()
Utility routine to check if the InetAddress is an IP multicast address. |
boolean |
isSiteLocalAddress()
Utility routine to check if the InetAddress is a site local address. |
Methods inherited from class java.net.InetAddress |
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getAllByName, getByAddress, getByAddress, getByName, getCanonicalHostName, getHostName, getLocalHost, isReachable, isReachable, toString |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Method Detail |
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public boolean isMulticastAddress()
isMulticastAddress
in class InetAddress
boolean
indicating if the InetAddress is
an IP multicast addresspublic boolean isAnyLocalAddress()
isAnyLocalAddress
in class InetAddress
boolean
indicating if the Inetaddress is
a wildcard address.public boolean isLoopbackAddress()
InetAddress
isLoopbackAddress
in class InetAddress
boolean
indicating if the InetAddress is
a loopback address; or false otherwise.public boolean isLinkLocalAddress()
isLinkLocalAddress
in class InetAddress
boolean
indicating if the InetAddress is
a link local address; or false if address is not a link local unicast address.public boolean isSiteLocalAddress()
isSiteLocalAddress
in class InetAddress
boolean
indicating if the InetAddress is
a site local address; or false if address is not a site local unicast address.public boolean isMCGlobal()
isMCGlobal
in class InetAddress
boolean
indicating if the address has
is a multicast address of global scope, false if it is not
of global scope or it is not a multicast addresspublic boolean isMCNodeLocal()
isMCNodeLocal
in class InetAddress
boolean
indicating if the address has
is a multicast address of node-local scope, false if it is not
of node-local scope or it is not a multicast addresspublic boolean isMCLinkLocal()
isMCLinkLocal
in class InetAddress
boolean
indicating if the address has
is a multicast address of link-local scope, false if it is not
of link-local scope or it is not a multicast addresspublic boolean isMCSiteLocal()
isMCSiteLocal
in class InetAddress
boolean
indicating if the address has
is a multicast address of site-local scope, false if it is not
of site-local scope or it is not a multicast addresspublic boolean isMCOrgLocal()
isMCOrgLocal
in class InetAddress
boolean
indicating if the address has
is a multicast address of organization-local scope,
false if it is not of organization-local scope
or it is not a multicast addresspublic byte[] getAddress()
InetAddress
object. The result is in network byte order: the highest order
byte of the address is in getAddress()[0]
.
getAddress
in class InetAddress
public String getHostAddress()
getHostAddress
in class InetAddress
public int hashCode()
hashCode
in class InetAddress
Object.equals(java.lang.Object)
,
Hashtable
public boolean equals(Object obj)
true
if and only if the argument is
not null
and it represents the same IP address as
this object.
Two instances of InetAddress
represent the same IP
address if the length of the byte arrays returned by
getAddress
is the same for both, and each of the
array components is the same for the byte arrays.
equals
in class InetAddress
obj
- the object to compare against.
true
if the objects are the same;
false
otherwise.InetAddress.getAddress()
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Java™ Platform Standard Ed. 6 |
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