Example usage for java.net InetAddress getHostName

Introduction

In this page you can find the example usage for java.net InetAddress getHostName.

Prototype

public String getHostName() 

Source Link

Document

Gets the host name for this IP address.

Usage

From source file:beans.NTPClient.java

/**
 * Process <code>TimeInfo</code> object and print its details.
 * /*from w ww  . j av  a2s .  c o m*/
 * @param info
 *          <code>TimeInfo</code> object.
 */
public static void processResponse(TimeInfo info) {
    NtpV3Packet message = info.getMessage();
    int stratum = message.getStratum();
    String refType;
    if (stratum <= 0) {
        refType = "(Unspecified or Unavailable)";
    } else if (stratum == 1) {
        refType = "(Primary Reference; e.g., GPS)"; // GPS, radio clock, etc.
    } else {
        refType = "(Secondary Reference; e.g. via NTP or SNTP)";
    }
    // stratum should be 0..15...
    System.out.println(" Stratum: " + stratum + " " + refType);
    int version = message.getVersion();
    int li = message.getLeapIndicator();
    System.out.println(" leap=" + li + ", version=" + version + ", precision=" + message.getPrecision());

    System.out.println(" mode: " + message.getModeName() + " (" + message.getMode() + ")");
    int poll = message.getPoll();
    // poll value typically btwn MINPOLL (4) and MAXPOLL (14)
    System.out.println(
            " poll: " + (poll <= 0 ? 1 : (int) Math.pow(2, poll)) + " seconds" + " (2 ** " + poll + ")");
    double disp = message.getRootDispersionInMillisDouble();
    System.out.println(" rootdelay=" + numberFormat.format(message.getRootDelayInMillisDouble())
            + ", rootdispersion(ms): " + numberFormat.format(disp));

    int refId = message.getReferenceId();
    String refAddr = NtpUtils.getHostAddress(refId);
    String refName = null;
    if (refId != 0) {
        if (refAddr.equals("127.127.1.0")) {
            refName = "LOCAL"; // This is the ref address for the Local Clock
        } else if (stratum >= 2) {
            // If reference id has 127.127 prefix then it uses its own reference
            // clock
            // defined in the form 127.127.clock-type.unit-num (e.g. 127.127.8.0
            // mode 5
            // for GENERIC DCF77 AM; see refclock.htm from the NTP software
            // distribution.
            if (!refAddr.startsWith("127.127")) {
                try {
                    InetAddress addr = InetAddress.getByName(refAddr);
                    String name = addr.getHostName();
                    if (name != null && !name.equals(refAddr)) {
                        refName = name;
                    }
                } catch (UnknownHostException e) {
                    // some stratum-2 servers sync to ref clock device but fudge stratum
                    // level higher... (e.g. 2)
                    // ref not valid host maybe it's a reference clock name?
                    // otherwise just show the ref IP address.
                    refName = NtpUtils.getReferenceClock(message);
                }
            }
        } else if (version >= 3 && (stratum == 0 || stratum == 1)) {
            refName = NtpUtils.getReferenceClock(message);
            // refname usually have at least 3 characters (e.g. GPS, WWV, LCL, etc.)
        }
        // otherwise give up on naming the beast...
    }
    if (refName != null && refName.length() > 1) {
        refAddr += " (" + refName + ")";
    }
    System.out.println(" Reference Identifier:\t" + refAddr);

    TimeStamp refNtpTime = message.getReferenceTimeStamp();
    System.out.println(" Reference Timestamp:\t" + refNtpTime + "  " + refNtpTime.toDateString());

    // Originate Time is time request sent by client (t1)
    TimeStamp origNtpTime = message.getOriginateTimeStamp();
    System.out.println(" Originate Timestamp:\t" + origNtpTime + "  " + origNtpTime.toDateString());

    long destTime = info.getReturnTime();
    // Receive Time is time request received by server (t2)
    TimeStamp rcvNtpTime = message.getReceiveTimeStamp();
    System.out.println(" Receive Timestamp:\t" + rcvNtpTime + "  " + rcvNtpTime.toDateString());

    // Transmit time is time reply sent by server (t3)
    TimeStamp xmitNtpTime = message.getTransmitTimeStamp();
    System.out.println(" Transmit Timestamp:\t" + xmitNtpTime + "  " + xmitNtpTime.toDateString());

    // Destination time is time reply received by client (t4)
    TimeStamp destNtpTime = TimeStamp.getNtpTime(destTime);
    System.out.println(" Destination Timestamp:\t" + destNtpTime + "  " + destNtpTime.toDateString());

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    String delay = (delayValue == null) ? "N/A" : delayValue.toString();
    String offset = (offsetValue == null) ? "N/A" : offsetValue.toString();

    System.out.println(" Roundtrip delay(ms)=" + delay + ", clock offset(ms)=" + offset); // offset
                                                                                          // in
                                                                                          // ms
}

---

From source file:ntp.NTPClient.java

/**
 * Process <code>TimeInfo</code> object and print its details.
 * @param info <code>TimeInfo</code> object.
 *//*  w  ww. ja v a  2  s . c o m*/
public static void processResponse(TimeInfo info) {
    NtpV3Packet message = info.getMessage();
    int stratum = message.getStratum();
    String refType;
    if (stratum <= 0) {
        refType = "(Unspecified or Unavailable)";
    } else if (stratum == 1) {
        refType = "(Primary Reference; e.g., GPS)"; // GPS, radio clock, etc.
    } else {
        refType = "(Secondary Reference; e.g. via NTP or SNTP)";
    }
    // stratum should be 0..15...
    System.out.println(" Stratum: " + stratum + " " + refType);
    int version = message.getVersion();
    int li = message.getLeapIndicator();
    System.out.println(" leap=" + li + ", version=" + version + ", precision=" + message.getPrecision());

    System.out.println(" mode: " + message.getModeName() + " (" + message.getMode() + ")");
    int poll = message.getPoll();
    // poll value typically btwn MINPOLL (4) and MAXPOLL (14)
    System.out.println(
            " poll: " + (poll <= 0 ? 1 : (int) Math.pow(2, poll)) + " seconds" + " (2 ** " + poll + ")");
    double disp = message.getRootDispersionInMillisDouble();
    System.out.println(" rootdelay=" + numberFormat.format(message.getRootDelayInMillisDouble())
            + ", rootdispersion(ms): " + numberFormat.format(disp));

    int refId = message.getReferenceId();
    String refAddr = NtpUtils.getHostAddress(refId);
    String refName = null;
    if (refId != 0) {
        if (refAddr.equals("127.127.1.0")) {
            refName = "LOCAL"; // This is the ref address for the Local Clock
        } else if (stratum >= 2) {
            // If reference id has 127.127 prefix then it uses its own reference clock
            // defined in the form 127.127.clock-type.unit-num (e.g. 127.127.8.0 mode 5
            // for GENERIC DCF77 AM; see refclock.htm from the NTP software distribution.
            if (!refAddr.startsWith("127.127")) {
                try {
                    InetAddress addr = InetAddress.getByName(refAddr);
                    String name = addr.getHostName();
                    if (name != null && !name.equals(refAddr)) {
                        refName = name;
                    }
                } catch (UnknownHostException e) {
                    // some stratum-2 servers sync to ref clock device but fudge stratum level higher... (e.g. 2)
                    // ref not valid host maybe it's a reference clock name?
                    // otherwise just show the ref IP address.
                    refName = NtpUtils.getReferenceClock(message);
                }
            }
        } else if (version >= 3 && (stratum == 0 || stratum == 1)) {
            refName = NtpUtils.getReferenceClock(message);
            // refname usually have at least 3 characters (e.g. GPS, WWV, LCL, etc.)
        }
        // otherwise give up on naming the beast...
    }
    if (refName != null && refName.length() > 1) {
        refAddr += " (" + refName + ")";
    }
    System.out.println(" Reference Identifier:\t" + refAddr);

    TimeStamp refNtpTime = message.getReferenceTimeStamp();
    System.out.println(" Reference Timestamp:\t" + refNtpTime + "  " + refNtpTime.toDateString());

    // Originate Time is time request sent by client (t1)
    TimeStamp origNtpTime = message.getOriginateTimeStamp();
    System.out.println(" Originate Timestamp:\t" + origNtpTime + "  " + origNtpTime.toDateString());

    long destTime = info.getReturnTime();
    // Receive Time is time request received by server (t2)
    TimeStamp rcvNtpTime = message.getReceiveTimeStamp();
    System.out.println(" Receive Timestamp:\t" + rcvNtpTime + "  " + rcvNtpTime.toDateString());

    // Transmit time is time reply sent by server (t3)
    TimeStamp xmitNtpTime = message.getTransmitTimeStamp();
    System.out.println(" Transmit Timestamp:\t" + xmitNtpTime + "  " + xmitNtpTime.toDateString());

    // Destination time is time reply received by client (t4)
    TimeStamp destNtpTime = TimeStamp.getNtpTime(destTime);
    System.out.println(" Destination Timestamp:\t" + destNtpTime + "  " + destNtpTime.toDateString());

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    String delay = (delayValue == null) ? "N/A" : delayValue.toString();
    String offset = (offsetValue == null) ? "N/A" : offsetValue.toString();

    System.out.println(" Roundtrip delay(ms)=" + delay + ", clock offset(ms)=" + offset); // offset in ms
    Promedio = Promedio + offsetValue;
    Cant = Cant + 1;
}

---

From source file:net.librec.util.Systems.java

/**
 * Get IP of the System.//from   w w  w.  ja  v  a 2 s  .c  o  m
 *
 * @return IP of the System
 */
public static String getIP() {
    InetAddress ip = null;
    try {
        ip = InetAddress.getLocalHost();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return ip.getHostName() + "@" + ip.getHostAddress();
}

---

From source file:org.nebula.service.core.HostAddress.java

public static String getLocalHost() throws Exception {

    Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
    while (interfaces.hasMoreElements()) {
        NetworkInterface current = interfaces.nextElement();

        if (!current.isUp() || current.isLoopback() || current.isVirtual()) {
            continue;
        }//from  www.j a va 2s  .  c o m
        Enumeration<InetAddress> addresses = current.getInetAddresses();
        while (addresses.hasMoreElements()) {
            InetAddress current_addr = addresses.nextElement();
            if (current_addr.isLoopbackAddress()
                    || !InetAddressUtils.isIPv4Address(current_addr.getHostAddress())) {
                continue;
            }
            return current_addr.getHostName();
        }
    }

    throw new Exception("Failed to get local hostname");
}

---

From source file:ntpclock.kamalan.com.utility.NTPClient.java

/**
 * Process <code>TimeInfo</code> object and print its details.
 * @param info <code>TimeInfo</code> object.
 *//* w  w  w  . j  a va  2s  . co  m*/
public static Date processResponse(TimeInfo info) {

    NtpV3Packet message = info.getMessage();
    int stratum = message.getStratum();
    String refType;
    if (stratum <= 0) {
        refType = "(Unspecified or Unavailable)";
    } else if (stratum == 1) {
        refType = "(Primary Reference; e.g., GPS)"; // GPS, radio clock, etc.
    } else {
        refType = "(Secondary Reference; e.g. via NTP or SNTP)";
    }
    // stratum should be 0..15...
    System.out.println(" Stratum: " + stratum + " " + refType);
    int version = message.getVersion();
    int li = message.getLeapIndicator();
    System.out.println(" leap=" + li + ", version=" + version + ", precision=" + message.getPrecision());

    System.out.println(" mode: " + message.getModeName() + " (" + message.getMode() + ")");
    int poll = message.getPoll();
    // poll value typically btwn MINPOLL (4) and MAXPOLL (14)
    System.out.println(
            " poll: " + (poll <= 0 ? 1 : (int) Math.pow(2, poll)) + " seconds" + " (2 ** " + poll + ")");
    double disp = message.getRootDispersionInMillisDouble();
    System.out.println(" rootdelay=" + numberFormat.format(message.getRootDelayInMillisDouble())
            + ", rootdispersion(ms): " + numberFormat.format(disp));

    int refId = message.getReferenceId();
    String refAddr = NtpUtils.getHostAddress(refId);
    String refName = null;
    if (refId != 0) {
        if (refAddr.equals("127.127.1.0")) {
            refName = "LOCAL"; // This is the ref address for the Local Clock
        } else if (stratum >= 2) {
            // If reference id has 127.127 prefix then it uses its own reference clock
            // defined in the form 127.127.clock-type.unit-num (e.g. 127.127.8.0 mode 5
            // for GENERIC DCF77 AM; see refclock.htm from the NTP software distribution.
            if (!refAddr.startsWith("127.127")) {
                try {
                    InetAddress addr = InetAddress.getByName(refAddr);
                    String name = addr.getHostName();
                    if (name != null && !name.equals(refAddr)) {
                        refName = name;
                    }
                } catch (UnknownHostException e) {
                    // some stratum-2 servers sync to ref clock device but fudge stratum level higher... (e.g. 2)
                    // ref not valid host maybe it's a reference clock name?
                    // otherwise just show the ref IP address.
                    refName = NtpUtils.getReferenceClock(message);
                }
            }
        } else if (version >= 3 && (stratum == 0 || stratum == 1)) {
            refName = NtpUtils.getReferenceClock(message);
            // refname usually have at least 3 characters (e.g. GPS, WWV, LCL, etc.)
        }
        // otherwise give up on naming the beast...
    }
    if (refName != null && refName.length() > 1) {
        refAddr += " (" + refName + ")";
    }
    System.out.println(" Reference Identifier:\t" + refAddr);

    TimeStamp refNtpTime = message.getReferenceTimeStamp();
    System.out.println(" Reference Timestamp:\t" + refNtpTime + "  " + refNtpTime.toDateString());

    // Originate Time is time request sent by client (t1)
    TimeStamp origNtpTime = message.getOriginateTimeStamp();
    System.out.println(" Originate Timestamp:\t" + origNtpTime + "  " + origNtpTime.toDateString());

    long destTime = info.getReturnTime();
    // Receive Time is time request received by server (t2)
    TimeStamp rcvNtpTime = message.getReceiveTimeStamp();
    System.out.println(" Receive Timestamp:\t" + rcvNtpTime + "  " + rcvNtpTime.toDateString());

    // Transmit time is time reply sent by server (t3)
    TimeStamp xmitNtpTime = message.getTransmitTimeStamp();
    System.out.println(" Transmit Timestamp:\t" + xmitNtpTime + "  " + xmitNtpTime.toDateString());

    // Destination time is time reply received by client (t4)
    TimeStamp destNtpTime = TimeStamp.getNtpTime(destTime);
    System.out.println(" Destination Timestamp:\t" + destNtpTime + "  " + destNtpTime.toDateString());

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    String delay = (delayValue == null) ? "N/A" : delayValue.toString();
    String offset = (offsetValue == null) ? "N/A" : offsetValue.toString();

    System.out.println(" Roundtrip delay(ms)=" + delay + ", clock offset(ms)=" + offset); // offset in ms

    // convert date string to java util.date format
    // sample: Wed, Jul 16 2014 05:00:00.070
    Date date = null;
    try {
        //            Log.e("NTPClient", destNtpTime.toDateString());
        date = new SimpleDateFormat("EEE, MMM dd yyyy hh:mm:ss.SSS").parse(destNtpTime.toDateString());
    } catch (ParseException e) {
        e.printStackTrace();
    }

    return date;
}

---

From source file:org.ntpsync.util.NtpSyncUtils.java

/**
 * Queries NTP server to get details//from   w ww .jav  a  2  s . co  m
 * 
 * @param ntpServerHostname
 */
public static TimeInfo detailedQuery(String ntpServerHostname) throws IOException, SocketException {
    NTPUDPClient client = new NTPUDPClient();
    // We want to timeout if a response takes longer than 10 seconds
    client.setDefaultTimeout(10000);

    TimeInfo info = null;
    try {
        client.open();

        InetAddress hostAddr = InetAddress.getByName(ntpServerHostname);
        Log.d(Constants.TAG, "> " + hostAddr.getHostName() + "/" + hostAddr.getHostAddress());
        info = client.getTime(hostAddr);
    } finally {
        client.close();
    }

    return info;
}

---

From source file:amplify.NTPClient.java

/**
 * Process <code>TimeInfo</code> object and print its details.
 *
 * @param info <code>TimeInfo</code> object.
 *///from   ww  w.  j  a  va  2 s  .com
public static void processResponse(TimeInfo info) {
    NtpV3Packet message = info.getMessage();
    int stratum = message.getStratum();
    String refType;
    if (stratum <= 0)
        refType = "(Unspecified or Unavailable)";
    else if (stratum == 1)
        refType = "(Primary Reference; e.g., GPS)"; // GPS, radio clock, etc.
    else
        refType = "(Secondary Reference; e.g. via NTP or SNTP)";
    // stratum should be 0..15...
    System.out.println(" Stratum: " + stratum + " " + refType);
    int version = message.getVersion();
    int li = message.getLeapIndicator();
    System.out.println(" leap=" + li + ", version=" + version + ", precision=" + message.getPrecision());

    System.out.println(" mode: " + message.getModeName() + " (" + message.getMode() + ")");
    int poll = message.getPoll();
    // poll value typically btwn MINPOLL (4) and MAXPOLL (14)
    System.out.println(
            " poll: " + (poll <= 0 ? 1 : (int) Math.pow(2, poll)) + " seconds" + " (2 ** " + poll + ")");
    double disp = message.getRootDispersionInMillisDouble();
    System.out.println(" rootdelay=" + numberFormat.format(message.getRootDelayInMillisDouble())
            + ", rootdispersion(ms): " + numberFormat.format(disp));

    int refId = message.getReferenceId();
    String refAddr = NtpUtils.getHostAddress(refId);
    String refName = null;
    if (refId != 0) {
        if (refAddr.equals("127.127.1.0")) {
            refName = "LOCAL"; // This is the ref address for the Local Clock
        } else if (stratum >= 2) {
            // If reference id has 127.127 prefix then it uses its own reference clock
            // defined in the form 127.127.clock-type.unit-num (e.g. 127.127.8.0 mode 5
            // for GENERIC DCF77 AM; see refclock.htm from the NTP software distribution.
            if (!refAddr.startsWith("127.127")) {
                try {
                    InetAddress addr = InetAddress.getByName(refAddr);
                    String name = addr.getHostName();
                    if (name != null && !name.equals(refAddr))
                        refName = name;
                } catch (UnknownHostException e) {
                    // some stratum-2 servers sync to ref clock device but fudge stratum level higher... (e.g. 2)
                    // ref not valid host maybe it's a reference clock name?
                    // otherwise just show the ref IP address.
                    refName = NtpUtils.getReferenceClock(message);
                }
            }
        } else if (version >= 3 && (stratum == 0 || stratum == 1)) {
            refName = NtpUtils.getReferenceClock(message);
            // refname usually have at least 3 characters (e.g. GPS, WWV, LCL, etc.)
        }
        // otherwise give up on naming the beast...
    }
    if (refName != null && refName.length() > 1)
        refAddr += " (" + refName + ")";

    TimeStamp refNtpTime = message.getReferenceTimeStamp();

    // Originate Time is time request sent by client (t1)
    TimeStamp origNtpTime = message.getOriginateTimeStamp();

    long destTime = info.getReturnTime();
    long localDestTime = System.currentTimeMillis();

    // Receive Time is time request received by server (t2)
    TimeStamp rcvNtpTime = message.getReceiveTimeStamp();

    // Transmit time is time reply sent by server (t3)
    TimeStamp xmitNtpTime = message.getTransmitTimeStamp();

    // Destination time is time reply received by client (t4)
    TimeStamp destNtpTime = TimeStamp.getNtpTime(destTime);

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    String delay = (delayValue == null) ? "N/A" : delayValue.toString();
    String offset = (offsetValue == null) ? "N/A" : offsetValue.toString();
    clockOffset = offsetValue != null ? offsetValue.longValue() : 0L;

    System.out.println(" Reference Identifier:\t" + refAddr);
    System.out.println(" Reference Timestamp:\t" + refNtpTime + "  " + refNtpTime.toDateString());
    System.out.println(" Originate Timestamp:\t" + origNtpTime + "  " + origNtpTime.toDateString());
    System.out.println(" Receive Timestamp:\t" + rcvNtpTime + "  " + rcvNtpTime.toDateString());
    System.out.println(" Transmit Timestamp:\t" + xmitNtpTime + "  " + xmitNtpTime.toDateString());
    System.out.println(" Destination Timestamp:\t" + destNtpTime + "  " + destNtpTime.toDateString());
    System.out.println(" Roundtrip delay(ms)=" + delay + ", clock offset(ms)=" + offset); // offset in ms
}

---

From source file:com.amplify.gcm.hack.NTPClient.java

/**
 * Process <code>TimeInfo</code> object and print its details.
 *
 * @param info <code>TimeInfo</code> object.
 *//*from w w  w. j av  a 2 s  .com*/
public static void processResponse(TimeInfo info) {
    NtpV3Packet message = info.getMessage();
    int stratum = message.getStratum();
    String refType;
    if (stratum <= 0)
        refType = "(Unspecified or Unavailable)";
    else if (stratum == 1)
        refType = "(Primary Reference; e.g., GPS)"; // GPS, radio clock, etc.
    else
        refType = "(Secondary Reference; e.g. via NTP or SNTP)";
    // stratum should be 0..15...
    System.out.println(" Stratum: " + stratum + " " + refType);
    int version = message.getVersion();
    int li = message.getLeapIndicator();
    System.out.println(" leap=" + li + ", version=" + version + ", precision=" + message.getPrecision());

    System.out.println(" mode: " + message.getModeName() + " (" + message.getMode() + ")");
    int poll = message.getPoll();
    // poll value typically btwn MINPOLL (4) and MAXPOLL (14)
    System.out.println(
            " poll: " + (poll <= 0 ? 1 : (int) Math.pow(2, poll)) + " seconds" + " (2 ** " + poll + ")");
    double disp = message.getRootDispersionInMillisDouble();
    System.out.println(" rootdelay=" + numberFormat.format(message.getRootDelayInMillisDouble())
            + ", rootdispersion(ms): " + numberFormat.format(disp));

    int refId = message.getReferenceId();
    String refAddr = NtpUtils.getHostAddress(refId);
    String refName = null;
    if (refId != 0) {
        if (refAddr.equals("127.127.1.0")) {
            refName = "LOCAL"; // This is the ref address for the Local Clock
        } else if (stratum >= 2) {
            // If reference id has 127.127 prefix then it uses its own reference clock
            // defined in the form 127.127.clock-type.unit-num (e.g. 127.127.8.0 mode 5
            // for GENERIC DCF77 AM; see refclock.htm from the NTP software distribution.
            if (!refAddr.startsWith("127.127")) {
                try {
                    InetAddress addr = InetAddress.getByName(refAddr);
                    String name = addr.getHostName();
                    if (name != null && !name.equals(refAddr))
                        refName = name;
                } catch (UnknownHostException e) {
                    // some stratum-2 servers sync to ref clock device but fudge stratum level higher... (e.g. 2)
                    // ref not valid host maybe it's a reference clock name?
                    // otherwise just show the ref IP address.
                    refName = NtpUtils.getReferenceClock(message);
                }
            }
        } else if (version >= 3 && (stratum == 0 || stratum == 1)) {
            refName = NtpUtils.getReferenceClock(message);
            // refname usually have at least 3 characters (e.g. GPS, WWV, LCL, etc.)
        }
        // otherwise give up on naming the beast...
    }
    if (refName != null && refName.length() > 1)
        refAddr += " (" + refName + ")";

    TimeStamp refNtpTime = message.getReferenceTimeStamp();

    // Originate Time is time request sent by client (t1)
    TimeStamp origNtpTime = message.getOriginateTimeStamp();

    long destTime = info.getReturnTime();
    long localDestTime = System.currentTimeMillis();

    // Receive Time is time request received by server (t2)
    TimeStamp rcvNtpTime = message.getReceiveTimeStamp();

    // Transmit time is time reply sent by server (t3)
    TimeStamp xmitNtpTime = message.getTransmitTimeStamp();

    // Destination time is time reply received by client (t4)
    TimeStamp destNtpTime = TimeStamp.getNtpTime(destTime);

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    String delay = (delayValue == null) ? "N/A" : delayValue.toString();
    String offset = (offsetValue == null) ? "N/A" : offsetValue.toString();
    clockOffset = offsetValue != null ? offsetValue.longValue() : 0L;

    Log.i(TAG, " Reference Identifier:\t" + refAddr);
    Log.i(TAG, " Reference Timestamp:\t" + refNtpTime + "  " + refNtpTime.toDateString());
    Log.i(TAG, " Originate Timestamp:\t" + origNtpTime + "  " + origNtpTime.toDateString());
    Log.i(TAG, " Receive Timestamp:\t" + rcvNtpTime + "  " + rcvNtpTime.toDateString());
    Log.i(TAG, " Transmit Timestamp:\t" + xmitNtpTime + "  " + xmitNtpTime.toDateString());
    Log.i(TAG, " Destination Timestamp:\t" + destNtpTime + "  " + destNtpTime.toDateString());
    Log.i(TAG, " Roundtrip delay(ms)=" + delay + ", clock offset(ms)=" + offset);
}

---

From source file:org.paxml.selenium.rc.FileServer.java

public static String getHostName() {
    try {//from   w  ww  .jav  a2 s. c  o m
        InetAddress addr = InetAddress.getLocalHost();
        return addr.getHostName();
    } catch (UnknownHostException e) {
        throw new PaxmlRuntimeException("Cannot get this machine's name", e);
    }
}

---

From source file:com.microsoft.tfs.jni.helpers.LocalHost.java

/**
 * Gets the host name using only standard Java features. This method is
 * unreliable in certain network configurations because it relies on Java's
 * DNS features to resolve the local interface, and DNS may not always work.
 * Other methods should be preferred to this one.
 *
 * @return the short host name (without domain names), or null if none could
 *         be determined./* w  w  w  .  j av  a 2s.  c  o m*/
 */
private static String getPureJavaShortName() {
    /*
     * I have a feeling this may fail for some computers with unusual network
     * configurations (lots of interfaces; no DNS; etc.). It may need to be
     * scrapped and re-written.
     */
    String name = null;

    try {
        final InetAddress localMachine = InetAddress.getLocalHost();
        name = localMachine.getHostName();
    } catch (final java.net.UnknownHostException e) {
        log.warn("Pure Java host name lookup failed", e); //$NON-NLS-1$

        /*
         * This happens in some network configurations on Unix, and possibly
         * Windows.
         */
        return null;
    }

    /*
     * GCJ (and possibly others) returns a full hostname
     * ("fun.whatever.domain") instead of just "fun", so we use only the
     * first part.
     */
    final int dotIndex = name.indexOf('.');
    if (dotIndex != -1) {
        name = name.substring(0, dotIndex);
    }

    return name;
}

---

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