Java Utililty Methods HTTP Port Find

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

try (ServerSocket socket = new ServerSocket(0)) {
    return socket.getLocalPort();
} catch (IOException ioe) {
    return -1;

int result;
try {
    ServerSocket socket = new ServerSocket(0);
    result = socket.getLocalPort();
    socket.close();
} catch (IOException ioe) {
    throw new RuntimeException("Failed to find free port.", ioe);
return result;

try {
    try (ServerSocket socket = new ServerSocket(0)) {
        socket.setReuseAddress(true);
        return socket.getLocalPort();
} catch (IOException e) {
    return -1;

for (int port = 22332; port < 22500; port++) {
    if (trySocket(port)) {
        return port;
throw new IllegalStateException("Cannot find a single free port");

ServerSocket serverSocket = new ServerSocket(0);
int port = serverSocket.getLocalPort();
serverSocket.close();
return port;

try (ServerSocket s = new ServerSocket(0)) {
    s.setReuseAddress(true);
    return s.getLocalPort();

try {
    final ServerSocket ss = new ServerSocket(0);
    ss.setReuseAddress(true);
    final int port = ss.getLocalPort();
    ss.close();
    return port;
} catch (final Throwable t) {
    throw new RuntimeException(t);
...

ServerSocket serverSocket = null;
try {
    serverSocket = new ServerSocket(0);
    int freePort = serverSocket.getLocalPort();
    return freePort;
} catch (IOException e) {
    return -1;
} finally {
...

return getFreePort(MIN_SAFE_PORT, MAX_PORT);