IT. Expert System.

Android Reference

NetworkInterface


java.net

Class NetworkInterface



  • public final class NetworkInterface
    extends Object
    This class is used to represent a network interface of the local device. An interface is defined by its address and a platform dependent name. The class provides methods to get all information about the available interfaces of the system or to identify the local interface of a joined multicast group.
    • Method Detail

      • getIndex

        public int getIndex()
        Returns the index for the network interface, or -1 if unknown.
      • getName

        public String getName()
        Returns the name of this network interface (such as "eth0" or "lo").
      • getInetAddresses

        public Enumeration<InetAddress> getInetAddresses()
        Returns an enumeration of the addresses bound to this network interface.
      • getDisplayName

        public String getDisplayName()
        Returns a human-readable name for this network interface. On Android, this is the same string as returned by getName().
      • getByIndex

        public static NetworkInterface getByIndex(int index)
                                           throws SocketException
        Returns the NetworkInterface corresponding to the given interface index, or null if no interface has this index.
        Throws:
        SocketException - if an error occurs.
      • getNetworkInterfaces

        public static Enumeration<NetworkInterface> getNetworkInterfaces()
                                                                  throws SocketException
        Gets a list of all network interfaces available on the local system or null if no interface is available.
        Returns:
        the list of NetworkInterface instances representing the available interfaces.
        Throws:
        SocketException - if an error occurs while getting the network interface information.
      • equals

        public boolean equals(Object obj)
        Compares the specified object to this NetworkInterface and returns whether they are equal or not. The object must be an instance of NetworkInterface with the same name, display name, and list of interface addresses.
        Overrides:
        equals in class Object
        Parameters:
        obj - the object to compare with this instance.
        Returns:
        true if the specified object is equal to this NetworkInterface, false otherwise.
        See Also:
        hashCode()
      • hashCode

        public int hashCode()
        Returns the hash code for this NetworkInterface. Since the name should be unique for each network interface the hash code is generated using the name.
        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 details of this network interface. The exact format is deliberately unspecified. Callers that require a specific format should build a string themselves, using this class' accessor methods.
        Overrides:
        toString in class Object
        Returns:
        a printable representation of this object.
      • getInterfaceAddresses

        public List<InterfaceAddress> getInterfaceAddresses()
        Returns a List of the InterfaceAddresses for this network interface.
        Since:
        1.6
      • getSubInterfaces

        public Enumeration<NetworkInterface> getSubInterfaces()
        Returns an enumeration of all the sub-interfaces of this network interface. Sub-interfaces are also known as virtual interfaces.

        For example, eth0:1 would be a sub-interface of eth0.

        Returns:
        an Enumeration of all the sub-interfaces of this network interface
        Since:
        1.6
      • getParent

        public NetworkInterface getParent()
        Returns the parent NetworkInterface of this interface if this is a sub-interface, or null if it's a physical (non virtual) interface.
        Returns:
        the NetworkInterface this interface is attached to.
        Since:
        1.6
      • isUp

        public boolean isUp()
                     throws SocketException
        Returns true if this network interface is up.
        Returns:
        true if the interface is up.
        Throws:
        SocketException - if an I/O error occurs.
        Since:
        1.6
      • isLoopback

        public boolean isLoopback()
                           throws SocketException
        Returns true if this 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
      • isPointToPoint

        public boolean isPointToPoint()
                               throws SocketException
        Returns true if this network interface is a point-to-point interface. (For example, a PPP connection using a modem.)
        Returns:
        true if the interface is point-to-point.
        Throws:
        SocketException - if an I/O error occurs.
        Since:
        1.6
      • supportsMulticast

        public boolean supportsMulticast()
                                  throws SocketException
        Returns true if this network interface supports multicast.
        Throws:
        SocketException - if an I/O error occurs.
        Since:
        1.6
      • getHardwareAddress

        public byte[] getHardwareAddress()
                                  throws SocketException
        Returns the hardware address of the interface, if it has one, or null otherwise.
        Throws:
        SocketException - if an I/O error occurs.
        Since:
        1.6
      • getMTU

        public int getMTU()
                   throws SocketException
        Returns the Maximum Transmission Unit (MTU) of this interface.
        Returns:
        the value of the MTU for the interface.
        Throws:
        SocketException - if an I/O error occurs.
        Since:
        1.6
      • isVirtual

        public boolean isVirtual()
        Returns true if this interface is a virtual interface (also called a sub-interface). 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


Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 523 / 158669890. Delta: 0.04052 с