Browse Definitions:
Definition

exception

Contributor(s): Matthew Haughn

An exception, in programming, is an unplanned event, such as invalid input or a loss of connectivity, that occurs while a program is executing and disrupts the flow of its instructions. Exception is a short way of saying exceptional event.

In Java, exceptions exist as a class, java.lang.Exception, with two main subclasses, IOException and RuntimeException. Checked exceptions occur when the program is compiled; for the most part, the program should be able to recover from these. These can be things like FileNotFoundException, for example, or InvalidInputExceptionException handling code can be written to deal with the issue, so that the program can continue.

Unchecked exceptions are events that aren’t planned for, so they aren’t checked at compile time – they happen when the program executes and typically can’t be handled. An unchecked exception that cannot be handled by the program is known as a fatal exception because it forces the operating system to close the program and possibly shut down the entire system. An error is a type of unchecked exception, although there are others.

This was last updated in July 2016

Continue Reading About exception

Join the conversation

1 comment

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

Fine tuning these exceptions can be an ongoing task. There may always be one or two you need to add down the road. The reason being you assumed something that failed to be correct or that failed it's own exception test and let bad data through.
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

SearchSecurity

  • evil maid attack

    An evil maid attack is a security exploit that targets a computing device that has been shut down and left unattended.  An evil ...

  • Common Body of Knowledge (CBK)

    In security, Common Body of Knowledge (CBK) is a comprehensive framework of all the relevant subjects a security professional ...

  • rootkit

    A rootkit is a program or, more often, a collection of software tools that gives a threat actor remote access to and control over...

SearchHealthIT

  • value-based healthcare

    Value-based healthcare, also known as value-based care, is a payment model that rewards healthcare providers for providing ...

  • health informatics

    Health informatics is the practice of acquiring, studying and managing health data and applying medical concepts in conjunction ...

  • clinical trial

    A clinical trial, also known as a clinical research study, is a protocol to evaluate the effects and efficacy of experimental ...

SearchDisasterRecovery

  • crisis communication

    Crisis communication is a method of corresponding with people and organizations during a disruptive event to provide them with ...

  • Zerto

    Zerto is a storage software vendor that specializes in enterprise-class business continuity and disaster recovery in virtual and ...

  • crisis management plan (CMP)

    A crisis management plan (CMP) is a document that outlines the processes an organization will use to respond to a critical ...

SearchStorage

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access ...

  • RAID 10 (RAID 1+0)

    RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data.

  • Red Hat OpenStack Platform

    Red Hat OpenStack Platform is a commercially supported distribution of open source OpenStack software designed to build and ...

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close