Package java.net

Class Inet4Address

java.lang.Object
java.net.InetAddress
java.net.Inet4Address
All Implemented Interfaces:
Serializable
public final class Inet4Address
extends InetAddress
An IPv4 address. See InetAddress.
See Also:
Serialized Form

  • Field Details

  • Method Details

    • isAnyLocalAddress

      public boolean isAnyLocalAddress()
      Description copied from class: InetAddress
      Returns whether this is the IPv6 unspecified wildcard address :: or the IPv4 "any" address, 0.0.0.0.
      Overrides:
      isAnyLocalAddress in class InetAddress

    • isLinkLocalAddress

      public boolean isLinkLocalAddress()
      Description copied from class: InetAddress
      Returns whether this address is a link-local address or not.

      Valid IPv6 link-local addresses have the prefix fe80::/10.

      RFC 3484 "Default Address Selection for Internet Protocol Version 6 (IPv6)" states that both IPv4 auto-configuration addresses (prefix 169.254/16) and IPv4 loopback addresses (prefix 127/8) have link-local scope, but Inet4Address only considers the auto-configuration addresses to have link-local scope. That is: the IPv4 loopback address returns false.

      Overrides:
      isLinkLocalAddress in class InetAddress

    • isLoopbackAddress

      public boolean isLoopbackAddress()
      Description copied from class: InetAddress
      Returns whether this address is a loopback address or not.

      Valid IPv4 loopback addresses have the prefix 127/8.

      The only valid IPv6 loopback address is ::1.

      Overrides:
      isLoopbackAddress in class InetAddress

    • isMCGlobal

      public boolean isMCGlobal()
      Description copied from class: InetAddress
      Returns whether this address is a global multicast address or not.

      Valid IPv6 global multicast addresses have the prefix ffxe::/16, where x is a set of flags and the additional 112 bits make up the global multicast address space.

      Valid IPv4 global multicast addresses are the range of addresses from 224.0.1.0 to 238.255.255.255.

      Overrides:
      isMCGlobal in class InetAddress

    • isMCLinkLocal

      public boolean isMCLinkLocal()
      Description copied from class: InetAddress
      Returns whether this address is a link-local multicast address or not.

      Valid IPv6 link-local multicast addresses have the prefix ffx2::/16, where x is a set of flags and the additional 112 bits make up the link-local multicast address space.

      Valid IPv4 link-local multicast addresses have the prefix 224.0.0/24.

      Overrides:
      isMCLinkLocal in class InetAddress

    • isMCNodeLocal

      public boolean isMCNodeLocal()
      Description copied from class: InetAddress
      Returns whether this address is a node-local multicast address or not.

      Valid IPv6 node-local multicast addresses have the prefix ffx1::/16, where x is a set of flags and the additional 112 bits make up the link-local multicast address space.

      There are no valid IPv4 node-local multicast addresses.

      Overrides:
      isMCNodeLocal in class InetAddress

    • isMCOrgLocal

      public boolean isMCOrgLocal()
      Description copied from class: InetAddress
      Returns whether this address is a organization-local multicast address or not.

      Valid IPv6 organization-local multicast addresses have the prefix ffx8::/16, where x is a set of flags and the additional 112 bits make up the link-local multicast address space.

      Valid IPv4 organization-local multicast addresses have the prefix 239.192/14.

      Overrides:
      isMCOrgLocal in class InetAddress

    • isMCSiteLocal

      public boolean isMCSiteLocal()
      Description copied from class: InetAddress
      Returns whether this address is a site-local multicast address or not.

      Valid IPv6 site-local multicast addresses have the prefix ffx5::/16, where x is a set of flags and the additional 112 bits make up the link-local multicast address space.

      Valid IPv4 site-local multicast addresses have the prefix 239.255/16.

      Overrides:
      isMCSiteLocal in class InetAddress

    • isMulticastAddress

      public boolean isMulticastAddress()
      Description copied from class: InetAddress
      Returns whether this address is a multicast address or not.

      Valid IPv6 multicast addresses have the prefix ff::/8.

      Valid IPv4 multicast addresses have the prefix 224/4.

      Overrides:
      isMulticastAddress in class InetAddress

    • isSiteLocalAddress

      public boolean isSiteLocalAddress()
      Description copied from class: InetAddress
      Returns whether this address is a site-local address or not.

      For the purposes of this method, valid IPv6 site-local addresses have the deprecated prefix fec0::/10 from RFC 1884, not the modern prefix fc00::/7 from RFC 4193.

      RFC 3484 "Default Address Selection for Internet Protocol Version 6 (IPv6)" states that IPv4 private addresses have the prefix 10/8, 172.16/12, or 192.168/16.

      Overrides:
      isSiteLocalAddress in class InetAddress
      Returns:
      true if this instance represents a site-local address, false otherwise.