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A method should never throw {{RuntimeException}} or {{Exception}}. This is because handling these requires catching {{RuntimeException}}, which is forbidden in [EXC32-J. Do not catch RuntimeException]. Moreover, throwing a {{RuntimeException}} can lead to subtle errors such as a caller who fails to retrieve a return value from the offending method, is unable to check for appropriate feedback. The Java Language Specification (Section 8.4.7 Method Body) allows the declaration of a method with a return type without making it necessary to return a value if a runtime exception is thrown from within the method \[[JLS 05|AA. Java References#JLS 05]\]. |
Instead, always throw an exception subclassed from Exception. It is permissible to construct an exception class specifically for a single throw statement.
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