1. Must you either handle an unchecked exception or declare it in a method’s header? 2. In what order should you write multiple catch blocks after a single try block? 3. Define a class...

1. Must you either handle an unchecked exception or declare it in a method’s header?

2. In what order should you write multiple catch blocks after a single try block?

3. Define a class NeedlessOperationException of checked exceptions that are thrown to indicate an integer multiplication by 1.

4. Define a method that throws but does not handle a NeedlessOperationException, as described.