public final class

Inet4Address

extends InetAddress
java.lang.Object
   ↳ java.net.InetAddress
     ↳ java.net.Inet4Address

Class Overview

This class represents a 32 bit long IPv4 address. The most common textual representation of an IPv4 address follows the pattern b.b.b.b where each b represents one of the four bytes. If only three parts are specified (b.b.bb ), the last part is then 16 bit long, the address represents a class B network address as 128.net.host. A two part address (b.bbb ) allows to represent a class A network address as net.host. If there is only one part (bbbb ) the address is represented without any byte rearrangement.

Summary

Public Methods
boolean isAnyLocalAddress()
Returns whether the represented address is the local wildcard ANY address or not.
boolean isLinkLocalAddress()
Returns whether this address has a link-local scope or not.
boolean isLoopbackAddress()
Returns whether the represented address is a loopback address or not.
boolean isMCGlobal()
Returns whether the address is a global multicast address or not.
boolean isMCLinkLocal()
Returns whether the address is a link-local multicast address or not.
boolean isMCNodeLocal()
Returns whether the address has a node-local scope or not.
boolean isMCOrgLocal()
Returns whether the address is a organization-local multicast address or not.
boolean isMCSiteLocal()
Returns whether the address is a site-local multicast address or not.
boolean isMulticastAddress()
Returns whether the represented address is a multicast address or not.
boolean isSiteLocalAddress()
Returns whether this address has a site-local scope or not.
[Expand]
Inherited Methods
From class java.net.InetAddress
From class java.lang.Object

Public Methods

public boolean isAnyLocalAddress ()

Since: API Level 1

Returns whether the represented address is the local wildcard ANY address or not.

Returns
  • true if this instance represents the wildcard ANY address, false otherwise.

public boolean isLinkLocalAddress ()

Since: API Level 1

Returns whether this address has a link-local scope or not.

RFC 3484
Default Address Selection for Internet Protocol Version 6 (IPv6) states IPv4 auto-configuration addresses, prefix 169.254/16, IPv4 loopback addresses, prefix 127/8, are assigned link-local scope.

Returns
  • true if this instance represents a link-local address, false otherwise.

public boolean isLoopbackAddress ()

Since: API Level 1

Returns whether the represented address is a loopback address or not. Loopback IPv4 addresses are prefixed with: 011111111 = 127.

Returns
  • true if this instance represents a lookback address, false otherwise.

public boolean isMCGlobal ()

Since: API Level 1

Returns whether the address is a global multicast address or not. Valid MCGlobal IPv4 addresses are 224.0.1.0 - 238.255.255.255.

Returns
  • true if the address is in the global multicast group, false otherwise.

public boolean isMCLinkLocal ()

Since: API Level 1

Returns whether the address is a link-local multicast address or not. The valid range for IPv4 link-local addresses is: 224.0.0.0 to 239.0.0.255 Hence a mask of 111000000000000000000000 = 0xE00000.

Returns
  • true if this instance represents a link-local address, false otherwise.

public boolean isMCNodeLocal ()

Since: API Level 1

Returns whether the address has a node-local scope or not. This method returns always false because there are no valid IPv4 node-local addresses.

Returns
  • false for all IPv4 addresses.

public boolean isMCOrgLocal ()

Since: API Level 1

Returns whether the address is a organization-local multicast address or not. The valid range for IPv4 organization-local addresses is: 239.192.0.0 to 239.195.255.255 Hence masks of 11101111 11000000 to 11101111 11000011 are valid. 0xEFC0 to 0xEFC3

Returns
  • true if this instance represents a organization-local address, false otherwise.

public boolean isMCSiteLocal ()

Since: API Level 1

Returns whether the address is a site-local multicast address or not. The valid range for IPv4 site-local addresses is: 239.255.0.0 to 239.255.255.255 Hence a mask of 11101111 11111111 = 0xEFFF.

Returns
  • true if this instance represents a site-local address, false otherwise.

public boolean isMulticastAddress ()

Since: API Level 1

Returns whether the represented address is a multicast address or not. Valid IPv4 multicast addresses are prefixed with 1110 = 0xE.

Returns
  • true if this instance represents a multicast address, false otherwise.

public boolean isSiteLocalAddress ()

Since: API Level 1

Returns whether this address has a site-local scope or not.

RFC 3484
Default Address Selection for Internet Protocol Version 6 (IPv6) states IPv4 private addresses, prefixes 10/8, 172.16/12, and 192.168/16, are assigned site-local scope.

Returns
  • true if this instance represents a site-local address, false otherwise.