Java Utililty Methods HTTP Port Find

final ServerSocket server = new ServerSocket(0);
try {
    return server.getLocalPort();
} finally {
    server.close();

while (!available(suggestedPort)) {
    suggestedPort++;
return suggestedPort;

String url = "http://localhost:" + port + applicationRoot + resource + path;
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("GET");
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
StringBuilder response = new StringBuilder();
while ((line = in.readLine()) != null) {
...

HashSet obj = new HashSet();
StringTokenizer tokenStr = new StringTokenizer(hostName);
while (tokenStr.hasMoreTokens()) {
    String key = tokenStr.nextToken().trim();
    if (key.indexOf(":") > 0) {
        key = key.substring(0, key.indexOf(":")) + ":" + portNumber + ":" + bindingUser;
    } else {
        key = key + ":" + portNumber + ":" + bindingUser;
...

java.net.ServerSocket socket = new java.net.ServerSocket(0);
int port = socket.getLocalPort();
socket.close();
return port;

return String.valueOf(getPort(0));

for (int i = 0; i < MAX_PORT_COUNT; i++) {
    int candidatePort = BASE_PORT + NEXT_PORT.getAndIncrement() % MAX_PORT_COUNT;
    try {
        ServerSocket serverSocket = new ServerSocket(candidatePort);
        serverSocket.close();
        return candidatePort;
    } catch (IOException e) {
throw new IllegalStateException(
        String.format("Could not assign port in range %d - %d", BASE_PORT, MAX_PORT_COUNT + BASE_PORT));

try (ServerSocket ss = new ServerSocket(0)) {
    ss.setReuseAddress(true);
    return ss.getLocalPort();
} catch (IOException e) {
} finally {
    try {
        Thread.sleep(1000);
    } catch (InterruptedException e) {
...

try (ServerSocket s = new ServerSocket(0)) {
    return s.getLocalPort();
} catch (Exception e) {
    throw new AssertionError("Failed to find available port", e);

try {
    ServerSocket socket = new ServerSocket(0);
    try {
        return socket.getLocalPort();
    } finally {
        socket.close();
} catch (IOException e) {
...