Exceptions

• throw / catch

  • can throw any class that implements Throwable interface
  • Exception implements Throwable interface
  • usually object thrown is newly created, and
  • contains information used for error handling, recovery
  • object thrown is "caught" by catch clause

• throws clause

  • uncaught exception can be passed to caller via declaration in the throws clause of method
  • subclasses of RuntimeException are implicit
    • not required in throws clause
    • catch clause not required
  • other exceptions must be caught or specified

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