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Exceptions

Q1:

Which four can be thrown using the throw statement?
  1. Error
  2. Event
  3. Object
  4. Throwable
  5. Exception
  6. RuntimeException

A 1, 2, 3 and 4

B 2, 3, 4 and 5

C 1, 4, 5 and 6

D 2, 4, 5 and 6

ANS:C - 1, 4, 5 and 6

The (1), (4), (5) and (6) are the only four that can be thrown. An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch. The Throwable class is the superclass of all errors and exceptions in the Java language. The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch (checked exceptions) RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.



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