100 Continue
101 Switching Protocols
103 Early Hints
200 OK
201 Created
202 Accepted
203 Non-Authoritative Information
204 No Content
205 Reset Content
206 Partial Content
300 Multiple Choices
301 Moved Permanently
302 Found
303 See Other
304 Not Modified
307 Temporary Redirect
308 Permanent Redirect
400 Bad Request
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict
410 Gone
411 Length Required
412 Precondition Failed
413 Payload Too Large
414 URI Too Long
415 Unsupported Media Type
416 Range Not Satisfiable
417 Expectation Failed
418 I'm a teapot
422 Unprocessable Entity
425 Too Early
426 Upgrade Required
428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
451 Unavailable For Legal Reasons
500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Timeout
505 HTTP Version Not Supported
506 Variant Also Negotiates
507 Insufficient Storage
508 Loop Detected
510 Not Extended
511 Network Authentication Required

2xx : SUCCESS	200 OK : success	201 CREATED : successfully added data	204 NO-CONTENT successfully updated or deleted 3xx : REDIRECTION	304 NOT MODIFIED:	4xx : CLIENT SIDE ERROR	400 BAD REQUEST : bad data being sent 401 UNAUTHORIZED : 403 FORBIDDEN :	404 NOT FOUND : the resource does not exists at that location	405 METHOD NOT ALLOWED :	DELETE /api/spartans -->> 405 error	406 NOT ACCEPTABLE	415 Unsupported Media type	if you forget to specify the Content-Type	of Post request body, it will see it as plain text	and it will throw this error if it does not support	5xx : Server side error	500 internal service error	If the server do not have any mapping of the url	requested to handle the action -->> 500 503 SERVICE UNAVAILABLE : 504 GATEWAY TIMEOUT :

HTTP response status codes
HTTP response status codes indicate whether a specific HTTP request has been successfully completed.
Responses are grouped in five classes:
1. Informational responses (100–199)
2. Successful responses (200–299)
3. Redirects (300–399)
4. Client errors (400–499)
5. Server errors (500–599)
1. Information responses a. 100 Continue b. 101 Switching Protocol c. 102 Processing (WebDAV) d. 103 Early Hints
2. Successful responses a. 200 OK b. 201 Created c. 202 Accepted d. 203 Non-Authoritative Information e. 204 No Content f. 205 Reset Content g. 206 Partial Content h. 207 Multi-Status (WebDAV) i. 208 Already Reported (WebDAV) j. 226 IM Used (HTTP Delta encoding)
3. Redirection messages a. 300 Multiple Choice b. 301 Moved Permanently c. 302 Found d. 303 See Other e. 304 Not Modified f. 305 Use Proxy g. 306 unused h. 307 Temporary Redirect i. 308 Permanent Redirect
4. Client error responses a. 400 Bad Request b. 401 Unauthorized c. 402 Payment Required d. 403 Forbidden e. 404 Not Found f. 405 Method Not Allowed g. 406 Not Acceptable h. 407 Proxy Authentication Required i. 408 Request Timeout j. 409 Conflict k. 410 Gone l. 411 Length Required m. 412 Precondition Failed n. 413 Payload Too Large o. 414 URI Too Long p. 415 Unsupported Media Type q. 416 Range Not Satisfiable r. 417 Expectation Failed s. 418 I'm a teapot t. 421 Misdirected Request u. 425 Too Early v. 426 Upgrade Required w. 428 Precondition Required x. 429 Too Many Requests y. 431 Request Header Fields Too Large z. 451 Unavailable For Legal Reasons
5. Server error responses a. 500 Internal Server Error b. 501 Not Implemented c. 502 Bad Gateway d. 503 Service Unavailable e. 504 Gateway Timeout f. 505 HTTP Version Not Supported g. 506 Variant Also Negotiates h. 507 Insufficient Storage (WebDAV) i. 508 Loop Detected (WebDAV) j. 510 Not Extended k. 511 Network Authentication Required

| Status code | Functions |
|-------------|-------------------------------------------|
| 1XX Informational |
| 100 | Continue |
| 101 | Switching Protocols |
| 102 | Processing |
| 103 | Early Hints |
| 2XX Successful |
| 200 | OK |
| 201 | Created |
| 202 | Accepted |
| 203 | Non-Authoritative Information |
| 204 | No Content |
| 205 | Reset Content |
| 206 | Partial Content |
| 207 | Multi-Status |
| 208 | Already Reported |
| 226 | IM Used |
| 3XX Redirection |
| 300 | Multiple Choices |
| 301 | Moved Permanently |
| 302 | Found (Previously: Moved Temporarily) |
| 303 | See Other |
| 304 | Not Modified |
| 305 (Unused)| Previously: Use Proxy |
| 306 (Unused)| Previously: Switch Proxy |
| 307 | Temporary Redirect |
| 308 | Permanent Redirect |
| 4XX Client Error |
| 400 | Bad Request |
| 401 | Unauthorized |
| 402 | Payment Required |
| 403 | Forbidden |
| 404 | Not Found |
| 405 | Method Not Allowed |
| 406 | Not Acceptable |
| 407 | Proxy Authentication Required |
| 408 | Request Timeout |
| 409 | Conflict |
| 410 | Gone |
| 411 | Length Required |
| 412 | Precondition Failed |
| 413 | Payload Too Large |
| 414 | URI Too Long |
| 415 | Unsupported Media Type |
| 416 | Range Not Satisfiable |
| 417 | Expectation Failed |
| 418 (Unused)| Previously: I’m a Teapot |
| 421 | Misdirected Request |
| 422 | Unprocessable Entity |
| 423 | Locked |
| 424 | Failed Dependency |
| 425 | Too Early |
| 426 | Upgrade Required |
| 428 | Precondition Required |
| 429 | Too Many Requests |
| 431 | Request Header Fields Too Large |
| 451 | Unavailable for Legal Reasons |
| 5XX Server Error |
| 500 | Internal Server Error |
| 501 | Not Implemented |
| 502 | Bad Gateway |
| 503 | Service Unavailable |
| 504 | Gateway Timeout |
| 505 | HTTP Version Not Supported |
| 506 | Variant Also Negotiates |
| 507 | Insufficient Storage |
| 508 | Loop Detected |
| 510 (Unused)| Not Extended |
| 511 | Network Authentication Required |

{"tags":[{"tag":"textarea","content":"100s: Informational codes indicating that the request initiated by the browser is continuing.\n200s: Success codes returned when browser request was received, understood, and processed by the server.\n300s: Redirection codes returned when a new resource has been substituted for the requested resource.\n400s: Client error codes indicating that there was a problem with the request.\n500s: Server error codes indicating that the request was accepted, but that an error on the server prevented the fulfillment of the request.","code_language":"whatever"}]}

@Getter
@Setter
@RequiredArgsConstructor
@JsonInclude(JsonInclude.Include.NON_NULL)
public class ErrorResponse { private final int status; private final String message; private String stackTrace; private List<ValidationError> errors; @Getter @Setter @RequiredArgsConstructor private static class ValidationError { private final String field; private final String message; } public void addValidationError(String field, String message){ if(Objects.isNull(errors)){ errors = new ArrayList<>(); } errors.add(new ValidationError(field, message)); }
}

// A sample response
{ errors: [{ 'status': 'InvalidError' 'message': 'Invalid value for email', ... // Other details of the error }, { ... // Next error object }], data: { ... // Any data }
}

resource HTTP response method is made up of three
components:
Response Status Code ==> 200, 301, 404, 500
(these are the most common ones)
Response Header Fields ==> Date, Server, LastModified, Content-Type
Response Body ==> This is the data that comes
back to the client from the server.