NetworkInterface JDK 1.6)

public boolean equals (Object obj)

Compares this object against the specified object.

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 NetworkInterface as this object.

Two instances of NetworkInterface represent the same NetworkInterface if both name and addrs are the same for both.
Returns: true if the objects are the same; false otherwise.
Parameters:
- obj - the object to compare against.
See Also: InetAddress.getAddress(),

pack-privatestaticnative NetworkInterface getByIndex (int index) throws SocketException

Get a network interface given its index.

publicstatic NetworkInterface getByInetAddress (InetAddress addr) throws SocketException

Convenience method to search for a network interface that has the specified Internet Protocol (IP) address bound to it.

publicstatic NetworkInterface getByName (String name) throws SocketException

Searches for the network interface with the specified name.

public String getDisplayName ()

Get the display name of this network interface.

public byte getHardwareAddress () throws SocketException

Returns the hardware address (usually MAC) of the interface if it has one and if it can be accessed given the current privileges.

Returns the hardware address (usually MAC) of the interface if it
has one and if it can be accessed given the current privileges.
Returns: a byte array containing the address or null if the address doesn't exist or is not accessible.
Throws:
- SocketException - if an I/O error occurs.
Since: 1.6

pack-private int getIndex ()

Get the index of this network interface.

public Enumeration<InetAddress> getInetAddresses ()

Convenience method to return an Enumeration with all or a subset of the InetAddresses bound to this network interface.

public List<InterfaceAddress> getInterfaceAddresses ()

Get a List of all or a subset of the InterfaceAddresses of this network interface.

If there is a security manager, its checkConnect method is called with the InetAddress for each InterfaceAddress. Only InterfaceAddresses where the checkConnect doesn't throw a SecurityException will be returned in the List.
Returns: a List object with all or a subset of the InterfaceAddresss of this network interface
Since: 1.6

public int getMTU () throws SocketException

Returns the Maximum Transmission Unit (MTU) of this interface.

public String getName ()

Get the name of this network interface.

publicstatic Enumeration<NetworkInterface> getNetworkInterfaces () throws SocketException

Returns all the interfaces on this machine.

public NetworkInterface getParent ()

Returns the parent NetworkInterface of this interface if this is a subinterface, or null if it is a physical (non virtual) interface or has no parent.

Returns the parent NetworkInterface of this interface if this is
a subinterface, or null if it is a physical
(non virtual) interface or has no parent.
Returns: The NetworkInterface this interface is attached to.
Since: 1.6

public Enumeration<NetworkInterface> getSubInterfaces ()

Get an Enumeration with all the subinterfaces (also known as virtual interfaces) attached to this network interface.

public int hashCode ()

public boolean isLoopback () throws SocketException

Returns whether a network interface is a loopback interface.

Returns whether a network interface is a loopback interface.
Returns: true if the interface is a loopback interface.
Throws:
- SocketException - if an I/O error occurs.
Since: 1.6

public boolean isPointToPoint () throws SocketException

Returns whether a network interface is a point to point interface.

Returns whether a network interface is a point to point interface.
A typical point to point interface would be a PPP connection through
a modem.
Returns: true if the interface is a point to point interface.
Throws:
- SocketException - if an I/O error occurs.
Since: 1.6

public boolean isUp () throws SocketException

Returns whether a network interface is up and running.

Returns whether a network interface is up and running.
Returns: true if the interface is up and running.
Throws:
- SocketException - if an I/O error occurs.
Since: 1.6

public boolean isVirtual ()

Returns whether this interface is a virtual interface (also called subinterface).

Returns whether this interface is a virtual interface (also called
subinterface).
Virtual interfaces are, on some systems, interfaces created as a child
of a physical interface and given different settings (like address or
MTU). Usually the name of the interface will the name of the parent
followed by a colon (:) and a number identifying the child since there
can be several virtual interfaces attached to a single physical
interface.
Returns: true if this interface is a virtual interface.
Since: 1.6

public boolean supportsMulticast () throws SocketException

Returns whether a network interface supports multicasting or not.

Returns whether a network interface supports multicasting or not.
Returns: true if the interface supports Multicasting.
Throws:
- SocketException - if an I/O error occurs.
Since: 1.6

public String toString ()