Exception Handling

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Exception Handling
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Introduction

• Exceptions are errors or some peculiar problems
  other than logic or syntax errors.
• Exceptions are runtime anomalies or unusual
  conditions that a program may encounter while
  executing.

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Introduction

• Anomalies includes
• Division by zero
• Access to an array outside of its bounds
• Running out of memory or disk space

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Basics of Exception Handling

• The purpose of exception handling mechanism is to
  provide means to detect and report an exceptional
  circumstances so that appropriate action can be
  taken.
• Exceptions are of two types
• Synchronous Exception
• Out-of-range index
• Over-flow
• Asynchronous Exception
• Keyboard interrupts

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Basics of Exception Handling

• The mechanism has error handling code that
  perform the following tasks
• Find the problem ( Hit the exception )
• Inform that an error has occurred ( Throw the
  exception )
• Receive the error information ( Catch the
  exception )
• Take corrective actions ( Handle the exception )

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Exception Handling Mechanism

• The error handling code basically consists of two
  segments
• One to detect errors and to throw exceptions
• Other to catch the exceptions and to take
  appropriate actions.

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Thank You