HttpResponseCode

/** * 200 OK */public static final HttpResponseStatus OK = new HttpResponseStatus(200, "OK");/** * 201 Created */public static final HttpResponseStatus CREATED = new HttpResponseStatus(201, "Created");/** * 202 Accepted */public static final HttpResponseStatus ACCEPTED = new HttpResponseStatus(202, "Accepted");/** * 304 Not Modified */public static final HttpResponseStatus NOT_MODIFIED = new HttpResponseStatus(304, "Not Modified");/** * 400 Bad Request */public static final HttpResponseStatus BAD_REQUEST = new HttpResponseStatus(400, "Bad Request");/** * 404 Not Found */public static final HttpResponseStatus NOT_FOUND = new HttpResponseStatus(404, "Not Found");/** * 408 Request Timeout */public static final HttpResponseStatus REQUEST_TIMEOUT = new HttpResponseStatus(408, "Request Timeout");/** * 500 Internal Server Error */public static final HttpResponseStatus INTERNAL_SERVER_ERROR =        new HttpResponseStatus(500, "Internal Server Error");/** * 501 Not Implemented */public static final HttpResponseStatus NOT_IMPLEMENTED = new HttpResponseStatus(501, "Not Implemented");/** * 502 Bad Gateway */public static final HttpResponseStatus BAD_GATEWAY = new HttpResponseStatus(502, "Bad Gateway");/** * 503 Service Unavailable */public static final HttpResponseStatus SERVICE_UNAVAILABLE = new HttpResponseStatus(503, "Service Unavailable");/** * 504 Gateway Timeout */public static final HttpResponseStatus GATEWAY_TIMEOUT = new HttpResponseStatus(504, "Gateway Timeout");if (code < 100) {    reasonPhrase = "Unknown Status";} else if (code < 200) {    reasonPhrase = "Informational";} else if (code < 300) {    reasonPhrase = "Successful";} else if (code < 400) {    reasonPhrase = "Redirection";} else if (code < 500) {    reasonPhrase = "Client Error";} else if (code < 600) {    reasonPhrase = "Server Error";} else {    reasonPhrase = "Unknown Status";}