adds javalin exceptions

src/javalin/sending-errors.md

@@ -46,6 +46,16 @@ if (limit < 0 || offset < 0) {
 }
 ```
 
+Here are some useful built-in exceptions:
+
+|             Name              | Description                                                                                |
+| :---------------------------: | ------------------------------------------------------------------------------------------ |
+|     `BadRequestResponse`      | Returns a 400 Bad Request response with the default title Bad request.                     |
+|    `UnauthorizedResponse`     | Returns a 401 Unauthorized response with the default title Unauthorized.                   |
+|      `ForbiddenResponse`      | Returns a 403 Forbidden response with the default title Forbidden.                         |
+|      `NotFoundResponse`       | Returns a 404 Not Found response with the default title Not found.                         |
+| `InternalServerErrorResponse` | Returns a 500 Internal Server Error response with the default title Internal server error. |
+
 ## Fallback exception handling
 
 If an exception is thrown which Javalin does not know how to handle, it will be
@@ -57,3 +67,39 @@ app.exception(Exception.class, (e, ctx) -> {
   ctx.result("An unkown error occurred.");
 });
 ```
+
+<!-- RedirectResponse
+Returns a 302 Found response with the default title Redirected.
+
+BadRequestResponse
+Returns a 400 Bad Request response with the default title Bad request.
+
+UnauthorizedResponse
+Returns a 401 Unauthorized response with the default title Unauthorized.
+
+ForbiddenResponse
+Returns a 403 Forbidden response with the default title Forbidden.
+
+NotFoundResponse
+Returns a 404 Not Found response with the default title Not found.
+
+MethodNotAllowedResponse
+Returns a 405 Method Not Allowed response with the default title Method not allowed.
+
+ConflictResponse
+Returns a 409 Conflict response with the default title Conflict.
+
+GoneResponse
+Returns a 410 Gone response with the default title Gone.
+
+InternalServerErrorResponse
+Returns a 500 Internal Server Error response with the default title Internal server error.
+
+BadGatewayResponse
+Returns a 502 Bad Gateway response with the default title Bad gateway.
+
+ServiceUnavailableResponse
+Returns a 503 Service Unavailable response with the default title Service unavailable.
+
+GatewayTimeoutResponse
+Returns a 504 Gateway Timeout response with the default title Gateway timeout. -->