Jruby学习一则 获得网络接口信息

Code:
Ruby写出来果然比Java简单多了

require 'java'
import 'java.util.Enumeration'
import 'java.net.NetworkInterface'
import 'java.net.InetAddress'

nfis = NetworkInterface.getNetworkInterfaces();
puts "-" * 10 + " Dumping NetworkInterfaces " + "-" * 10
nfis.each do | nfi |
  puts "Network Interace " + nfi.getName();
  puts "Network Name     " + nfi.getDisplayName();
  puts "Network Addresses"
  addrs = nfi.getInterfaceAddresses();
  addrs.each do | addr |
    puts "InterfaceAddress: #{addr}"
    puts "InterfaceAddress: #{addr.getAddress()}"
  end
  puts "-" * 47
end

Output：

---------- Dumping NetworkInterfaces ----------
Network Interace lo
Network Name     MS TCP Loopback interface
Network Addresses
InterfaceAddress: /127.0.0.1/8 [/127.255.255.255]
InterfaceAddress: /127.0.0.1
-----------------------------------------------
Network Interace eth0
Network Name     Broadcom 802.11b/g WLAN - Packet Scheduler Miniport
Network Addresses
InterfaceAddress: /192.168.0.100/24 [/192.168.0.255]
InterfaceAddress: /192.168.0.100
-----------------------------------------------
Network Interace eth1
Network Name     NVIDIA nForce Networking Controller - Packet Scheduler Miniport

Network Addresses
-----------------------------------------------

一开始试验的java

import java.net.*;
import java.util.Enumeration;
public class ShowInterface 
{
    public static void main(String[] argv) {
        Enumeration<NetworkInterface> nifs;
        try {
            nifs = NetworkInterface.getNetworkInterfaces();
        } catch (Exception e) {
            System.out.println("ERROR!");
            return;
        }
        //NetworkInterface nifs = new NetworkInterface();
        while ( nifs.hasMoreElements() ) {
            NetworkInterface nif = nifs.nextElement();
            System.out.println("Network Interface -> " + nif.getName());
            System.out.println("  Network Name: " + nif.getDisplayName());
            System.out.println("  Network Address: ");
            Enumeration<InetAddress> eaddr = nif.getInetAddresses();
            while ( eaddr.hasMoreElements() ) {
                InetAddress addr = eaddr.nextElement();
                System.out.println("\t" + addr);
            }
            System.out.println("--------------------------------------------------");
        }
    }
}