Exception handling

}Exception—an indication of a problem that occurs during a program’s execution. 

  §The name “exception” implies that the problem occurs infrequently. 

}With exception handling, a program can continue executing (rather than terminating)after dealing with a problem. 

  §Mission-criticalor business-critical computing.

  §Robust and fault-tolerant programs (i.e., programs that can deal with problems as they arise and continue executing). 

}ArrayIndexOutOfBoundsException occurs when an attempt is made to access an element past either end of an array. 

}ClassCastException occurs when an attempt is made to castan object that does not have an is-a relationship with the type specified in the cast operator. 

}A NullPointerException occurs when a null reference is used where an object is expected. 

}Only classes that extend Throwable (package java.lang) directly or indirectly can be used with exception handling. 

.