Handling Exception in Java

A try-catch-finally block is used to handle exceptions by identifying a block of code that might throw an exception, handling the exception if it occurs, and executing finally block regardless of whether an exception was thrown.

Checked exceptions are exceptions that are checked at compile-time, whereas unchecked exceptions are exceptions that are not checked at compile-time.

Multiple catch clauses allow you to handle different types of exceptions separately, providing specific exception handling logic for different types of exceptions.

<p>The order of catch blocks is important because you should catch the most specific exceptions first and the most general exceptions last.</p> Signup and view all the answers

<p>An <code>ArrayIndexOutOfBoundsException</code> is a built-in exception that is thrown when you try to access an array index that is out of bounds.</p> Signup and view all the answers

<p>An <code>ArithmeticException</code> is a built-in exception that is thrown when you perform an illegal arithmetic operation, such as dividing by zero.</p> Signup and view all the answers

<p>A best practice for handling exceptions in Java is to catch specific exceptions rather than generic exceptions, and to handle exceptions as close to the source of the exception as possible.</p> Signup and view all the answers

<p>The <code>finally</code> block is used to execute code that must be executed regardless of whether an exception was thrown or not.</p> Signup and view all the answers

<p>The <code>try</code> block attempts to access an element at index 5 of the array, which is out of bounds.</p> Signup and view all the answers

<p>ArrayIndexOutOfBoundsException</p> Signup and view all the answers

<p>The <code>finally</code> block is executed regardless of whether an exception occurred or not.</p> Signup and view all the answers

<p>Checked exceptions are compile-time exceptions, while unchecked exceptions are runtime exceptions.</p> Signup and view all the answers

<p>Handle exceptions close to the source of the exception and provide a meaningful error message.</p> Signup and view all the answers

<p>NullPointerException</p> Signup and view all the answers

<p>The <code>catch</code> block catches the exception and provides a meaningful error message.</p> Signup and view all the answers

<p>An IOException is thrown.</p> Signup and view all the answers

<p>The <code>finally</code> block is always executed, regardless of whether an exception is thrown or not, and is used to perform any necessary cleanup or closing of resources.</p> Signup and view all the answers

<p>A <code>checked</code> exception is checked at compile-time and must be handled or declared, while an <code>unchecked</code> exception is not checked at compile-time and may not be caught.</p> Signup and view all the answers

<p>The <code>try</code> block contains the code that might throw an exception.</p> Signup and view all the answers

<p>An example of a built-in <code>checked</code> exception in Java is <code>IOException</code>.</p> Signup and view all the answers

<p>Exception handling improves program reliability, separates error handling code, and provides custom error messages.</p> Signup and view all the answers

<p>The <code>catch</code> block handles the exception thrown by the <code>try</code> block.</p> Signup and view all the answers

<p>An example of a built-in <code>unchecked</code> exception in Java is <code>ArithmeticException</code>.</p> Signup and view all the answers

<p>A best practice is to handle specific exceptions rather than catching general exceptions, such as <code>Exception</code>.</p> Signup and view all the answers