Name
InetAddress
Synopsis
This class
represents an Internet Protocol (IP) address. The
class does not have a public constructor but instead supports static
factory methods for obtaining InetAddress objects.
getLocalHost( )
returns the
InetAddress of the local computer.
getByName( ) returns the
InetAddress of a
host specified by name.
getAllByName( ) returns an array of
InetAddress objects that represents all the
available addresses for a host specified by name.
getByAddress( ) returns an
InetAddress that represents the IP address defined
by the specified array of bytes.
Once you have obtained an InetAddress object, its
instance methods provide various sorts of information about it. Two
of the most important are getHostName(
)
, which returns the hostname, and
getAddress( ), which returns the IP address as an
array of bytes, with the highest-order byte as the first element of
the array. getHostAddress(
)
returns the IP address formatted
as a string rather than as an array of bytes. The various methods
whose names begin with “is”
determine whether the address falls into any of the named categories.
The “isMC” methods are all related
to multicast addresses.
This class was originally defined in Java 1.0, but many of its
methods were added in Java 1.4. Java 1.4 also defined two subclasses,
Inet4Address and Inet6Address
representing IPv4 and IPv6 (version 4 and version 6) addresses.
Java 5.0 adds isReachable(
) for testing whether the address describes a reachable (and responsive) ...
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