You do need to look at the documentation, which should tell you. Look at this constructor and this method, for example. Note the unchecked Exception in one case appears only in the Javadoc and the checked Exception in the other case appears as a throws clause, too.
Note that unexpected unchecked Exceptions might not be listed at all; if you pass 0 and suffer an ArirthmeticException, that might not be anticipated or recorded.
subject: Could someone tell me where to find the information for this question?