java.net

Class InterfaceAddress

java.lang.Object

java.net.InterfaceAddress

public class InterfaceAddress
extends Object

Identifies one of a network interface's addresses. These are passed back from the JNI behind NetworkInterface.getNetworkInterfaces. Multiple addresses for the same interface are collected together on the Java side.

Since:

1.6

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Tests whether this object is equal to another one.
InetAddress	getAddress() Returns the InetAddress for this address.
InetAddress	getBroadcast() Returns the subnet-directed broadcast address if this is an IPv4 interface, null otherwise.
short	getNetworkPrefixLength() Returns the network prefix length in bits.
int	hashCode() Returns an integer hash code for this object.
String	toString() Returns a string containing this interface's address, prefix length, and broadcast address.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

equals

public boolean equals(Object obj)

Tests whether this object is equal to another one. Returns true if the address, broadcast address and prefix length are all equal.

Overrides:

equals in class Object

Parameters:

obj - the object to be compared.

Returns:

true if 'obj' is equal to this InterfaceAddress, false otherwise.

See Also:

Object.hashCode()

hashCode

public int hashCode()

Description copied from class: Object

Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Overrides:

hashCode in class Object

Returns:

this object's hash code.

See Also:

Object.equals(java.lang.Object)

toString

public String toString()

Returns a string containing this interface's address, prefix length, and broadcast address. For example: "/172.18.103.112/23 [/172.18.103.255]" or "/0:0:0:0:0:0:0:1%1/128 [null]".

Overrides:

toString in class Object

Returns:

a printable representation of this object.

getAddress

public InetAddress getAddress()

Returns the InetAddress for this address.

getBroadcast

public InetAddress getBroadcast()

Returns the subnet-directed broadcast address if this is an IPv4 interface, null otherwise.

getNetworkPrefixLength

public short getNetworkPrefixLength()

Returns the network prefix length in bits. (In IPv4 parlance, this is known as the subnet mask, but this method applies to IPv6 addresses too.)