How can I fix 'No exception of type SomeException can be thrown; an exception type must be a subclass of Throwable'

问题

I have java webstart app and want to use app API for testing purposes. So I get required (as I assumed) library from webserver and install it to maven repository. And all is fine except custom exception which received

No exception of type SomeException can be thrown; an exception type must be a subclass of Throwable

As I understand from similar topics - some jar library is missing, is there some way to know which one? or maybe there is other way to fix this? (of course I can install all jars which used for app, but there are over 90 jar's).

回答1:

If you want to define a custom exception, it MUST subclass Throwable; but in practice you'll never subclass this directly. Subclass either of:

• Exception if you want to create a checked exception class;
• RuntimeException if you want to create an unchecked exception class.

You may also want to subclass another exception already defined by the JDK, which defines a good number of exceptions which may fit what you want to "say" with your exception.

回答2:

I used JadClipse Eclipse plug-in for decompiling my jar and found that my SomeException extends FaultInfoException (org.codehaus.xfire.fault.FaultInfoException),and then added xfire-all dependency to my pom.xml

来源：https://stackoverflow.com/questions/27277008/how-can-i-fix-no-exception-of-type-someexception-can-be-thrown-an-exception-ty