Find all unchecked exceptions thrown by method?

Dear all,
I am writing critical code that must be correct. Thus, I wish to know that I have not overlooked any important unchecked exceptions. I am aware that the distinction between unchecked and checked exceptions is controversial, and I know the difference between these types of exceptions.
I would like to see for each function a list of all possible exceptions a method can throw. Preferably I would like a tool to do this for me, but I would write something myself if there is a reasonably simple way to do it.
More precisely, I would like to be able to define the set of "unchecked" exceptions myself, e.g., I would put down NullPointerException as "unchecked", but I would let IOException be checked (in my particular application, not in general). In general, this would however be a very nice language feature that could perhaps be a compromise in the (un)checked exceptions-controversy. Each programmer could define an "unchecked"-filter. Perhaps it would best be viewed as a kind of lint.
In any case, I have not found any tool, and it seems I can not do it myself with reflection, since it only gives access to declared exceptions, i.e., if the JDK-programmer decided not to put IOException in the signature of a method, then reflection can not see that the method may throw such an exception.
Does anybody know how to do this?

Douglas1024 wrote:
Thank you for your time, but I am well aware how one uses exceptions in normal code.
From an abstract point of view exceptions are simply a form of outputs from a method. Thus, if the goal is to write correct and easily verifiable code, in contrast to the vast majority of code that simply works reasonably, it is quite meaningful to know exactly what kinds of exceptions are thrown by a method and when.
Please note my correction regarding IOException.Millions upon millions of lines of correct code have been written following these standard java exception principles. The notion that you can write "better" code by detailing every single unchecked exception that could possibly be thrown is ludicrous. In fact by handling unchecked exceptions you will in all likelihood do more harm than good, hence why they are unchecked in the first place.

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    }This can uncouple an app from RMI dependancy. In more practical words: consider a webapp that contains two Servlets: a "startup" servlet and an "invocation" servlet. The startup servlet does nothing (always returns Method Not Allowed, default behaviour of HttpServlet), except locate an RMI Registry upon startup and look up some object bound to it. It can then make this object accessible to other classes through whatever means (i.e. a singleton Engine class).
    The invocation servlet does nothing upon startup, but simply calls some method on the previously acquired remote object. However, the invocation servlet does not need to know that the object is remote. Therefore, if the startup servlet wraps the remote object in another object (using the idea described before) then the invocation servlet is effectively removed from the RMI dependancy. The wrapper class can invoke some sort of failure mechanism upon the singleton engine (i.e. removing the remote object from memory) and optionally throw some other (optionally checked) exception (i.e. IllegalStateException) to the invocation servlet.
    In this way, the invocation servlet is not bound to RMI, there can be a single point where RemoteExceptions are handled and an unchecked exception (i.e. IllegalStateException) can be handled by the Servlet API through an exception error page, displaying a "Service Unavailable" message.
    Sorry for all this extensive text; I just typed out some thoughts. In short, my question is how and why can the throws clause change when overwriting a method? It's nothing I need though, except for the clarity (e.g. is this a bad practice to do?) and was more of an observation than a question.
    PS: Unless I'm mistaken, this is basically called the "Adapter" or "Bridge" (not sure which one it is) pattern (or a close adaptation to it) right (where one class is written to provide access to another class where the method signature is different)?
    Thanks for reading,
    Yuthura

    Yuthura wrote:
    I know it may throw any checked exception, but I'm pretty certain that an interface that extends java.rmi.Remote must include at least java.rmi.RemoteException in its throws clause (unless the spec has changed in Java 1.5/1.6).No.
    A method can always throw fewer exceptions than the one it's overriding. RMI has nothing to do with it.
    See Deitel & Deilte Advanced Java 2 Platform How To Program, 1st Ed. (ISBN 0-13-089650-1), page 793 (sorry, I couldn't find the RMI spec quick enough). Quote: "Each method in a Remote interface must have a throws clause that indicates that the method can throw RemoteException".Which means that there's always a possibility of RemoteException being thrown. That's a different issue. It's not becusae the parent class can throw RE. Rather, it's because some step that will always be followed is declared to throw RE.
    I later also noticed I could not add other checked exceptions, which made sense indeed. Your explanation made perfect sense now that I heard (read) it. But just to humour my curousity, has this always been possible? Yes, Java has always worked that way.
    PS: The overwriting/-riding was a grammatical typo (English is not my native language), but I meant to say what you said.No problem. Minor detail. It's a common mistake, but I always try to encourage proper terminology.

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