How to use supplier interface to create instances of different classes?

Question

Example code:

public void convertAndThrow(BusinessException e) throws ApiException {
    if (e.getKey().equals("0x42")) {
        throw new ApiConflict(e, 110);
    }
    throw new ApiInternalError(e, 0);
}

The BusinessException has a key (basically a numeric return code from another component, that shows up as string on our side). Now arbitrary BusinessException instances need to be converted into (rest) ApiExceptions. The above example would result in 409 "conflict" for "0x42", and a 500 "internal error" otherwise.

Note: the constructors take the same number of arguments (with the same meaning, the underlying exception, and some "sub" return code).

Now I would like to have a map that allows me to get something that I can then use to create the required ApiException instance. The following doesn't work, as Supplier.get() doesn't take any parameter, it is just meant to outline what I would like to have:

Map<String, Supplier<ApiException>> exceptionsByKey = new HashMap<>();
exceptionsByKey.put("0x42", somethingTakingAnExceptionCreatingApiConflict(110));

so that I can later simply do:

throw exceptionsByKey.get(key).get(e);

In other words:

• I want to put my different cases into a map
• map key: the "return code"
• map value: something that builds me specific ApiExceptions