29. Throwing and re-throwing an exception, cont.

• Syntax:

  
      throw exceptionReference; // rethrow
  
      throw new anotherException( parameters ); // create and throw new exception
  
  

• Rethrowing is useful when:

  • catch block catches exception but is unable to handle it

  • catch block decides that exception should be handled by the calling environment

• throw allows programmer to

  • provide exception-handling code in one place where it's the most appropriate