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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.net 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.net.NetworkInterface

NetworkInterface
final public class NetworkInterface extends Object (Code)
This class provides an methods that are used to get information about the network interfaces supported by the system


Field Summary
final static  intNO_INTERFACE_INDEX
    
final static  intUNSET_INTERFACE_INDEX
    
 InetAddressaddresses
    

Constructor Summary
 NetworkInterface(String name, String displayName, InetAddress addresses, int interfaceIndex)
     This constructor is used by the native method in order to construct the NetworkInterface objects in the array that it returns
Parameters:
  name - internal name associated with the interface
Parameters:
  displayName - a user interpretable name for the interface
Parameters:
  addresses - the Internet addresses associated with the interface
Parameters:
  interfaceIndex - an index for the interface.

Method Summary
public  booleanequals(Object obj)
     Compares the specified object to this NetworkInterface and answer if they are equal.
public static  NetworkInterfacegetByInetAddress(InetAddress address)
     Answers the network interface which has the specified internet address bound to it, if one exists.
public static  NetworkInterfacegetByName(String interfaceName)
    
public  StringgetDisplayName()
    
 InetAddressgetFirstAddress()
     Answers the first address for the network interface.
 intgetIndex()
     Answers the index for the network interface.
public  Enumeration<InetAddress>getInetAddresses()
    
public  StringgetName()
    
public static  Enumeration<NetworkInterface>getNetworkInterfaces()
    
public  inthashCode()
     Answers a hash code for this NetworkInterface object.
public  StringtoString()
    

Field Detail
NO_INTERFACE_INDEX
final static int NO_INTERFACE_INDEX(Code)



UNSET_INTERFACE_INDEX
final static int UNSET_INTERFACE_INDEX(Code)



addresses
InetAddress addresses(Code)




Constructor Detail
NetworkInterface
NetworkInterface(String name, String displayName, InetAddress addresses, int interfaceIndex)(Code)
This constructor is used by the native method in order to construct the NetworkInterface objects in the array that it returns
Parameters:
  name - internal name associated with the interface
Parameters:
  displayName - a user interpretable name for the interface
Parameters:
  addresses - the Internet addresses associated with the interface
Parameters:
  interfaceIndex - an index for the interface. Only set for platforms thatsupport IPV6




Method Detail
equals
public boolean equals(Object obj)(Code)
Compares the specified object to this NetworkInterface and answer if they are equal. The object must be an instance of NetworkInterface with the same name, displayName and list of network interfaces to be the same
Parameters:
  obj - the object to compare true if the specified object is equal to this NetworkInterfcae,false otherwise
See Also:   NetworkInterface.hashCode



getByInetAddress
public static NetworkInterface getByInetAddress(InetAddress address) throws SocketException(Code)
Answers the network interface which has the specified internet address bound to it, if one exists.
Parameters:
  address - address of interest network interface for internet address specified if it exists,otherwise null
throws:
  SocketException - if an error occurs when getting network interface information
throws:
  NullPointerException - if the address passed in is null



getByName
public static NetworkInterface getByName(String interfaceName) throws SocketException(Code)
Answers the network interface with the specified name, if one exists network interface for name specified if it exists, otherwise null
throws:
  SocketException - if an error occurs when getting network interface information
throws:
  NullPointerException - if the interface name passed in is null



getDisplayName
public String getDisplayName()(Code)
Answers the user readable name associated with the network interface display name associated with the network interface or null if oneis not available



getFirstAddress
InetAddress getFirstAddress()(Code)
Answers the first address for the network interface. This is used in the natives when we need one of the addresses for the interface and any one will do the first address if one exists, otherwise null.



getIndex
int getIndex()(Code)
Answers the index for the network interface. Unless the system supports IPV6 this will be 0. the index



getInetAddresses
public Enumeration<InetAddress> getInetAddresses()(Code)
Answers the list of internet addresses bound to the interface list of internet addresses bound to the interface



getName
public String getName()(Code)
Answers the name associated with the network interface name associated with the network interface



getNetworkInterfaces
public static Enumeration<NetworkInterface> getNetworkInterfaces() throws SocketException(Code)
Answers the list of network interfaces supported by the system or null if no interfaces are supported by the system Enumeration containing one NetworkInterface object for eachinterface supported by the system
throws:
  SocketException - if an error occurs when getting network interface information



hashCode
public int hashCode()(Code)
Answers a hash code for this NetworkInterface object. Since the name should be unique for each network interface the hash code is generated using this name the hashcode for hashtable indexing



toString
public String toString()(Code)
Answers a string containing a concise, human-readable description of the network interface a printable representation for the network interface



Methods inherited from java.lang.Object
protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object object)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final public Class<? extends Object> getClass()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
final public void notify()(Code)(Java Doc)
final public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final public void wait(long millis, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait(long millis) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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