Java Utililty Methods Host Check

List of utility methods to do Host Check

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Description

The list of methods to do Host Check are organized into topic(s).

Method

booleancheckHost(String host)
check Host 
try {
    InetAddress.getByName(host);
    return (true);
} catch (UnknownHostException uhe) {
    return (false);
voidcheckHost(String hostname)
check Host 
InetAddress.getByName(hostname);
InetAddresscheckHostIsAvailable(String hostName)
check Host Is Available 
try {
    InetAddress hostAddr = InetAddress.getByName(hostName.trim());
    return hostAddr;
} catch (UnknownHostException e) {
    System.out.println("Unknow host error for host " + hostName + ": " + e);
    return null;
booleancheckHostName(String hostName)
Check if the host name is the given one. 
if (hostName == null) {
    System.err.println("Given HOST name was NULL");
    return false;
try {
    String localHost = InetAddress.getLocalHost().getHostName();
    Pattern regex = Pattern.compile(hostName, Pattern.CASE_INSENSITIVE);
    Matcher regexMatcher = regex.matcher(localHost);
...
booleanisLocal(final String hostname)
is Local 
try {
    return InetAddress.getByName(hostname).isLoopbackAddress();
} catch (UnknownHostException e) {
    return false;
booleanisLocal(final String hostName)
Checks if given host name is local. 
try {
    return isLocal(InetAddress.getByName(hostName));
} catch (final UnknownHostException e) {
    return false;
booleanisHostReachable(String host, int timeout)
Get a value indicating whether the specified host is reachable using the specified timeout. 
try {
    return InetAddress.getByName(host).isReachable(timeout);
} catch (IOException e) {
    return false;
booleanisInternalHostname(String host)
Checks if a host name is internal 
try {
    InetAddress addr = InetAddress.getByName(host);
    return addr.isSiteLocalAddress() || addr.isLoopbackAddress();
} catch (UnknownHostException e) {
    e.printStackTrace();
return false;
booleanisThisMe(String hostname)
is This Me 
try {
    InetAddress[] myadds = getHostAddresses();
    InetAddress[] theiradds = InetAddress.getAllByName(hostname);
    for (int i = 0; i < theiradds.length; i++) {
        if (theiradds[i].isLoopbackAddress()) {
            return true;
        for (int j = 0; j < myadds.length; j++) {
...
StringnormalizeHost(String host)
normalize Host 
try {
    InetAddress address = InetAddress.getByName(host);
    if (isLocalAddress(address)) {
        return InetAddress.getLocalHost().getHostAddress();
    } else {
        return address.getHostAddress();
} catch (UnknownHostException e) {
...