stuff.java

class Stuff {
    void method() {
        /*.. in a catch block ..*/
        throw translate(ex);
    }

    @SuppressWarnings("UnusedReturnValue")
    private static RuntimeException translate(Exception ex)
        throws SomeCheckedException, SomeOtherException {
        if (ex instanceof SomeException) {
            throw new SomeCheckedException(ex);
        } else {
            throw new SomeOtherException(ex);
        }
    }
}