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

StringgetFile(String host, String savePath)
Get a file from a host uri, and save it into the save path 
InputStream input = null;
FileOutputStream writeFile = null;
String path = new String();
try {
    URL url = new URL(host);
    URLConnection connection = url.openConnection();
    int fileLength = connection.getContentLength();
    if (fileLength == -1) {
...
StringgetFullHostname()
get Full Hostname 
String hostname = "unknown";
try {
    final InetAddress host = InetAddress.getLocalHost();
    hostname = host.getHostName();
} catch (Exception ignore) {
return hostname;
StringgetFullyQualifiedDomainName(String unqualifiedHostname)
Converts a hostname into a canonical hostname. 
if (unqualifiedHostname == null) {
    throw new IllegalStateException("Hostname cannot be null.");
} else if (unqualifiedHostname.length() == 0) {
    throw new IllegalStateException("Hostname cannot be zero length.");
try {
    return InetAddress.getByName(unqualifiedHostname).getCanonicalHostName().toLowerCase();
} catch (UnknownHostException e) {
...
StringgetFullyQualifiedHostName()
get Fully Qualified Host Name 
String localhost = null;
try {
    localhost = InetAddress.getLocalHost().getCanonicalHostName().toLowerCase();
} catch (UnknownHostException e) {
    e.printStackTrace();
    localhost = "Unknown Host";
return localhost;
...
StringgetHost()
Gets the hostname of the machine running the code, foregoing the need for exception handling in-line when this information is needed. 
String host = "unknown";
try {
    host = InetAddress.getLocalHost().getHostName();
} catch (final UnknownHostException ex) {
    ex.printStackTrace();
return host;
StringgetHost()
get Host 
try {
    Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
    while (interfaces.hasMoreElements()) {
        NetworkInterface current = interfaces.nextElement();
        if (!current.isUp() || current.isLoopback() || current.isVirtual())
            continue;
        if (current.getName().contains("lxc"))
            continue; 
...
StringgetHost(String host)
Returns the host address, if the supplied host is localhost, else returns it, unchanged. 
if (host.equals("localhost")) {
    try {
        host = InetAddress.getLocalHost().getHostAddress();
    } catch (UnknownHostException ignore) {
return host;
StringgetHost(String link)
get Host 
URL url;
String host = "";
try {
    url = new URL(link);
    host = url.getHost();
} catch (MalformedURLException e) {
return host;
...
StringgetHost(String s)
get Host 
if (s == null) {
    return null;
try {
    InetAddress address = InetAddress.getByName(s);
    return address.getHostName();
} catch (UnknownHostException ex) {
    System.out.println("Could not find server hostname " + s);
...
StringgetHostCore(final String quadGraph)
This method should be used over others because it -safely- and accurately trims the host name by 1. 
final String[] graphurisplit = quadGraph.split("\\.");
StringBuilder host = new StringBuilder();
try {
    Integer.valueOf(graphurisplit[graphurisplit.length - 1]);
    host.append(quadGraph);
} catch (NumberFormatException e) {
    for (int i = Math.min(1, Math.max(graphurisplit.length - 2, 0)); i < graphurisplit.length; i++) {
        host.append(graphurisplit[i] + ".");
...