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Java Tutorial

Exception in JAVA

by anupmaurya November 16, 2022
written by anupmaurya 0 comment
1.1K

Table of Contents

  • What is Exception ?
    • Types of Exception
  • Java Exception Hierarchy

What is Exception ?

An exception is an abnormal condition that arises in a code sequence .When an Exception occurs the normal flow of the program is disrupted and the program/Application terminates abnormally, which is not recommended, therefore, these exceptions are to be handled.

Types of Exception

  • Compile Time Exception — Checked Exception

All exceptions other than Runtime Exceptions are known as Checked exceptions as the compiler checks them during compilation to see whether the programmer has handled them or not. If these exceptions are not handled/declared in the program, you will get compilation error.

  1. SQLException
  2. IOException
  3. ClassNotFoundException
  • Run Time Exception — Unchecked Exception

These exceptions are not checked at compile-time so compiler does not check whether the programmer has handled them or not but it’s the responsibility of the programmer to handle these exceptions and provide a safe exit.

  1. ArithmeticException
  2. NulPointerException
  3. ArrayIndexOutOfBoundsException

Java Exception Hierarchy

Every Exception in Java is the subtype of Exception class which in turn is the subclass of Throwable. And as we know everything in Java derived from Object class Throwable also derived from class Object. Exception and Error are two different classes that derived from Throwable. Errors represent a situation that doesn’t occur because of a Programming error but that might happen at the time of program execution and these are abnormal behavior which java program cannot handle and shouldn’t bother to handle.Exception in JAVA

 

 

exception handlingexception in javaunchecked exception .checked exception
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anupmaurya

Hey there, My name is Anup Maurya. I was born with love with programming and worked with TCS. One of best global (IT) services and consulting company as System Administrator . I also love graphics designing. It's my pleasure to have you here.

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