java - What is difference between name and display name of a network interface? -


i using java 8 on ubuntu 16.04. class java.net.networkinterface has 2 methods interface name. first 1 is:

get name of network interface. returns:     name of network interface       public string  [more ...] getname() {              return name;      }

other 1 is:

get display name of network interface. display name human readable string describing network device.   returns:    display name of network interface, or null if no display name available.   public string  [more ...] getdisplayname() {             return displayname;  }

when ifconfig, output is:

enp0s25   link encap:ethernet  hwaddr 00:24:1d:6e:03:42             inet addr:10.100.14.40  bcast:10.100.255.255  mask:255.255.0.0           inet6 addr: fe80::fc60:10a7:2f7e:127f/64 scope:link           broadcast running multicast  mtu:1500  metric:1           rx packets:30338414 errors:0 dropped:31 overruns:0 frame:0           tx packets:446227 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            rx bytes:3188550996 (3.1 gb)  tx bytes:53620407 (53.6 mb)           interrupt:16 memory:fc500000-fc520000

only 1 name shown. if run following program:

import java.net.*; import java.io.*; import java.util.*;  class mynetworkinterface {         public static void main(string[] args) throws exception         {                 enumeration<networkinterface> interfaces = networkinterface.getnetworkinterfaces();                 while(interfaces.hasmoreelements())                 {                         networkinterface n = (networkinterface) interfaces.nextelement();                         system.out.println(n);                         system.out.printf("the name is: %s%n", n.getdisplayname());                         system.out.printf("the name: %s%n", n.getname());                 }         }

}

the output is:

name:enp0s25 (enp0s25) name is: enp0s25 name: enp0s25 name:lo (lo) name is: lo name: lo

both names same.

my question is: difference between name , display name of network interface? why 2 names used?


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