Java Utililty Methods Host Name Get

InetAddress localMachine = InetAddress.getLocalHost();
return localMachine.getCanonicalHostName();

if (cachedShortHostName != null) {
    return cachedShortHostName;
try {
    String hostName;
    InetAddress iAddress = InetAddress.getLocalHost();
    hostName = iAddress.getHostName();
    String[] parts = hostName.split("\\.");
...

InetAddress address = LOCAL_ADDRESS;
return address == null ? LOCALHOST : address.getHostAddress();

try {
    return InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) {
    return "unknown";

String hostName = null;
try {
    hostName = InetAddress.getLocalHost().getHostName();
} catch (final UnknownHostException e) {
    try {
        final Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            final NetworkInterface nic = interfaces.nextElement();
...

Proxy foundProxy = null;
try {
    URI uri = new URI(proxyType, "//" + host, null);
    List<Proxy> proxies = ProxySelector.getDefault().select(uri);
    if (proxies != null) {
        for (Proxy proxy : proxies) {
            if (proxy != Proxy.NO_PROXY) {
                foundProxy = proxy;
...

final String host = System.getProperty("node0", "localhost");
return toIPv6URLFormat(host);

String hostname = null;
try {
    hostname = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) {
    e.printStackTrace();
return hostname;

String name = getHostName();
int i = name.indexOf('.');
if (i == -1)
    return name;
return name.substring(0, i);

return getFullHostname().replaceAll("\\..*", "");