How to write Java function that returns values of multiple data types?

Question

For example, I want to create a function that can return any number (negative, zero, or positive).

However, based on certain exceptions, I\'d like the function to re

Answer 1

Absolutely! In your case, since the return values can be positive, 0, negative, or false, probably the best return value would be a JSONObject. In your code, you would add this import:

import org.json.JSONObject;

and in the function:

JSONObject retval = new JSONObject();
double x = b*b - 4*a*c;
if(x < 0){
    retval.put("result", false);
}
else{
    retval.put("result", x);
}

You potentially could also add another key:value pair to the retval to include the result type to help with checking it in the calling function.