Vertx - Exception Handling

exception handling in Vert.x - vertx command line

authenticationProvider.authenticate(authInfo)
      .onSuccess(user -> {
        System.out.println("User " + user.principal() + " is now authenticated");
      })
      .onFailure(Throwable::printStackTrace);

In case of Internal Server Error (ie status code 500), you can catch them with an errorHandler

router.errorHandler(500, rc -> {
            System.err.println("Handling failure");
            Throwable failure = rc.failure();
            if (failure != null) {
                failure.printStackTrace();
            }
});

• Handling exceptions - You can set an exceptionHandler