Java Utililty Methods Host Name Get

List of utility methods to do Host Name Get

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Description

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

Method

StringgetHostname()
get Hostname 
String retHost = "UNKNOWN_HOST";
try {
    String host = InetAddress.getLocalHost().getCanonicalHostName();
    if (host != null) {
        int idx = host.indexOf(".");
        if (idx > -1) {
            retHost = host.substring(0, idx);
            try {
...
StringgetHostName(Proxy proxy)
get Host Name 
InetSocketAddress address = (InetSocketAddress) proxy.address();
return address.getHostName();
StringgetHostName(String destination)
get Host Name 
return new URL(destination).getHost();
StringgetHostName(String host)
get Host Name 
return InetAddress.getByName(host).getCanonicalHostName();
StringgetHostname(String targetEndpoint)
get Hostname 
try {
    URI uri = new URI(targetEndpoint);
    return uri.getHost();
} catch (Exception e) {
    return "localhost";
StringgetHostNameByInet()
Uses InetAddress.getLocalHost().getCanonicalHostName() to get the host name. 
try {
    String inetHost = InetAddress.getLocalHost().getCanonicalHostName();
    if (inetHost == null || inetHost.trim().isEmpty() || "localhost".equalsIgnoreCase(inetHost.trim()))
        return null;
    return inetHost.trim();
} catch (Exception x) {
    return null;
StringgetHostNameByNic()
Iterates through the found NICs, extracting the host name if the NIC is not the loopback interface. 
try {
    for (Enumeration<NetworkInterface> nicEnum = NetworkInterface.getNetworkInterfaces(); nicEnum
            .hasMoreElements();) {
        NetworkInterface nic = nicEnum.nextElement();
        if (nic != null && nic.isUp() && !nic.isLoopback()) {
            for (Enumeration<InetAddress> nicAddr = nic.getInetAddresses(); nicAddr.hasMoreElements();) {
                InetAddress addr = nicAddr.nextElement();
                String chost = addr.getCanonicalHostName();
...
StringgetHtmlSource(final String host)
get Html Source 
final StringBuilder sb = new StringBuilder();
InputStream is;
try {
    final URL url = new URL(host);
    is = url.openStream();
    final BufferedReader br = new BufferedReader(new InputStreamReader(is));
    String line;
    while ((line = br.readLine()) != null) {
...
StringgetInetHost()
get Inet Host 
try {
    return Iterables.getFirst(DOT_SPLITTER.split(InetAddress.getLocalHost().getHostName()), "UNKNOWN_HOST");
} catch (Exception e) {
    return "UNKNOWN_HOST";
StringgetLedgerAllocatorPoolName(int serverRegionId, int shardId, boolean useHostname)
Retrieve the ledger allocator pool name. 
if (useHostname) {
    return String.format("allocator_%04d_%s", serverRegionId, InetAddress.getLocalHost().getHostAddress());
} else {
    return String.format("allocator_%04d_%010d", serverRegionId, shardId);