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2010-06-01T05:03:47Z

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в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== An updated version of the ListNets program that uses the NetworkInterface enhancements ==



<source lang="java">
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");
}
}</source>



== Enumeration of NetworkInterface ==



<source lang="java">
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collections;
import java.util.Enumeration;
public class NetParms {
public static void main(String[] args) throws SocketException {
Enumeration<NetworkInterface> eni;
eni = NetworkInterface.getNetworkInterfaces();
for (NetworkInterface ni : Collections.list(eni)) {
System.out.println("Name = " + ni.getName());
System.out.println("Display Name = " + ni.getDisplayName());
System.out.println("Loopback = " + ni.isLoopback());
System.out.println("Up and running = " + ni.isUp());
System.out.println("MTU = " + ni.getMTU());
System.out.println("Supports multicast = " + ni.supportsMulticast());
System.out.println("Sub-interfaces");
Enumeration<NetworkInterface> eni2;
eni2 = ni.getSubInterfaces();
for (NetworkInterface ni2 : Collections.list(eni2))
System.out.println(" " + ni2);
System.out.println();
}
}
}</source>



== Get MAC address of a host: java.net.NetworkInterface.getHardwareAddress(). ==



<source lang="java">
import java.net.InetAddress;
import java.net.NetworkInterface;
public class Main {
public static void main(String[] args) throws Exception {
InetAddress address = InetAddress.getLocalHost();
NetworkInterface ni = NetworkInterface.getByInetAddress(address);
byte[] mac = ni.getHardwareAddress();
for (int i = 0; i < mac.length; i++) {
System.out.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : "");
}
}
}</source>



== Interface Lister ==



<source lang="java">
import java.net.NetworkInterface;
import java.util.Enumeration;
public class MainClass {
public static void main(String[] args) throws Exception {
Enumeration interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface) interfaces.nextElement();
System.out.println(ni);
}
}
}</source>



== NetworkInterface ==



<source lang="java">
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
public class NetworkParameterDemo {
public static void main(String[] args) throws Exception {
Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
while (en.hasMoreElements()) {
NetworkInterface ni = en.nextElement();
printParameter(ni);
}
}
public static void printParameter(NetworkInterface ni) throws SocketException {
System.out.println(" Name = " + ni.getName());
System.out.println(" Display Name = " + ni.getDisplayName());
System.out.println(" Is up = " + ni.isUp());
System.out.println(" Support multicast = " + ni.supportsMulticast());
System.out.println(" Is loopback = " + ni.isLoopback());
System.out.println(" Is virtual = " + ni.isVirtual());
System.out.println(" Is point to point = " + ni.isPointToPoint());
System.out.println(" Hardware address = " + ni.getHardwareAddress());
System.out.println(" MTU = " + ni.getMTU());
System.out.println("\nList of Interface Addresses:");
List<InterfaceAddress> list = ni.getInterfaceAddresses();
Iterator<InterfaceAddress> it = list.iterator();
while (it.hasNext()) {
InterfaceAddress ia = it.next();
System.out.println(" Address = " + ia.getAddress());
System.out.println(" Broadcast = " + ia.getBroadcast());
System.out.println(" Network prefix length = " + ia.getNetworkPrefixLength());
System.out.println("");
}
}
}</source>



== Programmatic Access to Network Parameters ==



<source lang="java">
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collections;
import java.util.Enumeration;
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("%n");
}
}</source>



== Report By Address ==



<source lang="java">
import java.net.InetAddress;
import java.net.NetworkInterface;
public class Main {
static public void main(String args[]) throws Exception {
InetAddress ia = InetAddress.getByName(args[0]);
NetworkInterface ni = NetworkInterface.getByInetAddress(ia);
System.out.println(ni);
}
}</source>



== Report By Name ==



<source lang="java">
import java.net.NetworkInterface;
public class Main {
static public void main(String args[]) throws Exception {
NetworkInterface ni = NetworkInterface.getByName(args[0]);
System.out.println(ni);
}
}</source>

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Admin: 1 версия

в 17:44, 31 мая 2010