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| java.lang.Object
 java.net.InetAddress
java.net.Inet6Address
| Inet6Address | | final public class Inet6Address extends InetAddress (Code) | | This class represents an Internet Protocol version 6 (IPv6) address.
Defined by
RFC 2373: IP Version 6 Addressing Architecture.
Textual representation of IPv6 address used as input to methods
takes one of the following forms:
The preferred form is x:x:x:x:x:x:x:x, where the 'x's are
the hexadecimal values of the eight 16-bit pieces of the
address. This is the full form. For example,
| 1080:0:0:0:8:800:200C:417A | |
Note that it is not necessary to write the leading zeros in
an individual field. However, there must be at least one numeral
in every field, except as described below. Due to some methods of allocating certain styles of IPv6
addresses, it will be common for addresses to contain long
strings of zero bits. In order to make writing addresses
containing zero bits easier, a special syntax is available to
compress the zeros. The use of "::" indicates multiple groups
of 16-bits of zeros. The "::" can only appear once in an address.
The "::" can also be used to compress the leading and/or trailing
zeros in an address. For example,
An alternative form that is sometimes more convenient
when dealing with a mixed environment of IPv4 and IPv6 nodes is
x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values
of the six high-order 16-bit pieces of the address, and the 'd's
are the decimal values of the four low-order 8-bit pieces of the
standard IPv4 representation address, for example,
| ::FFFF:129.144.52.38 | |
| ::129.144.52.38 | |
where "::FFFF:d.d.d.d" and "::d.d.d.d" are, respectively, the
general forms of an IPv4-mapped IPv6 address and an
IPv4-compatible IPv6 address. Note that the IPv4 portion must be
in the "d.d.d.d" form. The following forms are invalid:
| ::FFFF:d.d.d | |
| ::FFFF:d.d | |
| ::d.d.d | |
| ::d.d | |
The following form:
is valid, however it is an unconventional representation of
the IPv4-compatible IPv6 address,
while "::d" corresponds to the general IPv6 address
"0:0:0:0:0:0:0:d".
For methods that return a textual representation as output
value, the full form is used. Inet6Address will return the full
form because it is unambiguous when used in combination with other
textual data.
Special IPv6 address
| IPv4-mapped address |
Of the form::ffff:w.x.y.z, this IPv6 address is used to
represent an IPv4 address. It allows the native program to
use the same address data structure and also the same
socket when communicating with both IPv4 and IPv6 nodes.
In InetAddress and Inet6Address, it is used for internal
representation; it has no functional role. Java will never
return an IPv4-mapped address. These classes can take an
IPv4-mapped address as input, both in byte array and text
representation. However, it will be converted into an IPv4
address. |
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| Field Summary | |
| final static int | INADDRSZ
| | byte[] | ipaddress
Holds a 128-bit (16 bytes) IPv6 address. |
| Method Summary | |
| static byte[] | convertFromIPv4MappedAddress(byte[] addr)
| | public boolean | equals(Object obj)
Compares this object against the specified object.
The result is 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.
Parameters:
obj - the object to compare against. | | public byte[] | getAddress()
Returns the raw IP address of this InetAddress
object. | | public String | getHostAddress()
Returns the IP address string in textual presentation. | | public int | hashCode()
Returns a hashcode for this IP address. | | public boolean | isAnyLocalAddress()
Utility routine to check if the InetAddress in a wildcard address. | | public boolean | isIPv4CompatibleAddress()
Utility routine to check if the InetAddress is an
IPv4 compatible IPv6 address. | | static boolean | isIPv4MappedAddress(byte[] addr)
Utility routine to check if the InetAddress is an
IPv4 mapped IPv6 address. | | public boolean | isLinkLocalAddress()
Utility routine to check if the InetAddress is an link local address. | | public boolean | isLoopbackAddress()
Utility routine to check if the InetAddress is a loopback address. | | public boolean | isMCGlobal()
Utility routine to check if the multicast address has global scope. | | public boolean | isMCLinkLocal()
Utility routine to check if the multicast address has link scope. | | public boolean | isMCNodeLocal()
Utility routine to check if the multicast address has node scope. | | public boolean | isMCOrgLocal()
Utility routine to check if the multicast address has organization scope. | | public boolean | isMCSiteLocal()
Utility routine to check if the multicast address has site scope. | | public boolean | isMulticastAddress()
Utility routine to check if the InetAddress is an IP multicast
address. | | public boolean | isSiteLocalAddress()
Utility routine to check if the InetAddress is a site local address. | | static String | numericToTextFormat(byte[] src)
| | static byte[] | textToNumericFormat(String src)
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| INADDRSZ | | final static int INADDRSZ(Code) | | |
| ipaddress | | byte[] ipaddress(Code) | | Holds a 128-bit (16 bytes) IPv6 address.
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| Inet6Address | | Inet6Address()(Code) | | |
| convertFromIPv4MappedAddress | | static byte[] convertFromIPv4MappedAddress(byte[] addr)(Code) | | |
| equals | | public boolean equals(Object obj)(Code) | | Compares this object against the specified object.
The result is 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.
Parameters:
obj - the object to compare against. true if the objects are the same;false otherwise.
See Also: java.net.InetAddress.getAddress |
| getAddress | | public byte[] getAddress()(Code) | | Returns the raw IP address of this InetAddress
object. The result is in network byte order: the highest order
byte of the address is in getAddress()[0].
the raw IP address of this object. |
| getHostAddress | | public String getHostAddress()(Code) | | Returns the IP address string in textual presentation.
the raw IP address in a string format. |
| hashCode | | public int hashCode()(Code) | | Returns a hashcode for this IP address.
a hash code value for this IP address. |
| isAnyLocalAddress | | public boolean isAnyLocalAddress()(Code) | | Utility routine to check if the InetAddress in a wildcard address.
a boolean indicating if the Inetaddress isa wildcard address.
since:
1.4 |
| isIPv4CompatibleAddress | | public boolean isIPv4CompatibleAddress()(Code) | | Utility routine to check if the InetAddress is an
IPv4 compatible IPv6 address.
a boolean indicating if the InetAddress is an IPv4 compatible IPv6 address; or false if address is IPv4 address.
since:
1.4 |
| isIPv4MappedAddress | | static boolean isIPv4MappedAddress(byte[] addr)(Code) | | Utility routine to check if the InetAddress is an
IPv4 mapped IPv6 address.
a boolean indicating if the InetAddress is an IPv4 mapped IPv6 address; or false if address is IPv4 address. |
| isLinkLocalAddress | | public boolean isLinkLocalAddress()(Code) | | Utility routine to check if the InetAddress is an link local address.
a boolean indicating if the InetAddress is a link local address; or false if address is not a link local unicast address.
since:
1.4 |
| isLoopbackAddress | | public boolean isLoopbackAddress()(Code) | | Utility routine to check if the InetAddress is a loopback address.
a boolean indicating if the InetAddress is a loopback address; or false otherwise.
since:
1.4 |
| isMCGlobal | | public boolean isMCGlobal()(Code) | | Utility routine to check if the multicast address has global scope.
a 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 address
since:
1.4 |
| isMCLinkLocal | | public boolean isMCLinkLocal()(Code) | | Utility routine to check if the multicast address has link scope.
a 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 address
since:
1.4 |
| isMCNodeLocal | | public boolean isMCNodeLocal()(Code) | | Utility routine to check if the multicast address has node scope.
a 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 address
since:
1.4 |
| isMCOrgLocal | | public boolean isMCOrgLocal()(Code) | | Utility routine to check if the multicast address has organization scope.
a 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 address
since:
1.4 |
| isMCSiteLocal | | public boolean isMCSiteLocal()(Code) | | Utility routine to check if the multicast address has site scope.
a 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 address
since:
1.4 |
| isMulticastAddress | | public boolean isMulticastAddress()(Code) | | Utility routine to check if the InetAddress is an IP multicast
address. 11111111 at the start of the address identifies the
address as being a multicast address.
a boolean indicating if the InetAddress isan IP multicast address
since:
JDK1.1 |
| isSiteLocalAddress | | public boolean isSiteLocalAddress()(Code) | | Utility routine to check if the InetAddress is a site local address.
a boolean indicating if the InetAddress is a site local address; or false if address is not a site local unicast address.
since:
1.4 |
| numericToTextFormat | | static String numericToTextFormat(byte[] src)(Code) | | |
| textToNumericFormat | | static byte[] textToNumericFormat(String src)(Code) | | |
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