Mega Code Archive
An updated version of the ListNets program that uses the NetworkInterface enhancements
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import java.io.Console;
import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
public class Main {
public static void main(String args[]) throws SocketException {
Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
for (NetworkInterface netint : Collections.list(nets)) {
displayInterfaceInformation(netint);
}
}
private static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
System.out.printf("Display name: %s%n", netint.getDisplayName());
System.out.printf("Name: %s%n", netint.getName());
Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
for (InetAddress inetAddress : Collections.list(inetAddresses)) {
System.out.printf("InetAddress: %s%n", inetAddress);
}
System.out.printf("Parent: %s%n", netint.getParent());
System.out.printf("Up? %s%n", netint.isUp());
System.out.printf("Loopback? %s%n", netint.isLoopback());
System.out.printf("PointToPoint? %s%n", netint.isPointToPoint());
System.out.printf("Supports multicast? %s%n", netint.isVirtual());
System.out.printf("Virtual? %s%n", netint.isVirtual());
System.out.printf("Hardware address: %s%n", Arrays.toString(netint.getHardwareAddress()));
System.out.printf("MTU: %s%n", netint.getMTU());
List<InterfaceAddress> interfaceAddresses = netint.getInterfaceAddresses();
for (InterfaceAddress addr : interfaceAddresses) {
System.out.printf("InterfaceAddress: %s%n", addr.getAddress());
}
System.out.printf("%n");
Enumeration<NetworkInterface> subInterfaces = netint.getSubInterfaces();
for (NetworkInterface networkInterface : Collections.list(subInterfaces)) {
System.out.printf("%nSubInterface%n");
displayInterfaceInformation(networkInterface);
}
System.out.printf("%n");
}
}
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