Exception Handling in JAVA:

·        In Java, exception handling is managed via five keywords:

o    Try

o    Catch

o    Throw

o    Throws

o    finally

·        Program statements that should be monitored for exceptions are contained within a try block.

·        If an exception occurs within the try block, it is thrown. The exception which is thrown should be caught by the code (using catch) and that should also be handled.

·        System-generated exceptions are automatically thrown by the Java run-time system. To manually throw an exception, use the keyword throw.

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

·         Any code that absolutely must be executed before a method returns is put in a finally block.

This is the general form of an exception-handling block:

try

{

// block of code to monitor for errors

}

catch (ExceptionType1 exOb)

{

// exception handler for ExceptionType1

}

catch (ExceptionType2 exOb)

{

// exception handler for ExceptionType2

}

// ...

finally

{

// block of code to be executed before try block ends

}

·        Exception Type is the type of exception that has occurred.