Computer Scientists are Pretty Pessimistic

Sunday 28 August 2016

Exception Handling in JAVA

# An exception is an abnormal condition that arises in a code sequence at run time.

Java exception handling is managed via five keywords : -
                       Try, Catch, Throw, Throws and Finally

Try : -
       Program statements that you want to monitor for exceptions are contained within a try block.

Catch : -
      Catched an exception.

Throw : -
     To manually throw an exception use the keyword throw.

Throws : -
     Any exception that is thrown out of a method must be specified as such by a throws clause.

Finally : -
     Any code that absolutely must be executed after a try block completes is put in a finally block.

# Once an exception is thrown program control transfers out of the try block into the catch block.

                                        
                    java.lang.Arithmetic Exception: divide by zero
                    at exc2.main(exc2.java.18)

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