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Exception Handling

Last Updated : 26 May, 2026

title: Exception Handling Introduction

Exception Handling105 words4 headingsTables includedExamples included

title: Exception Handling Introduction description: Java mein exceptions kya hain

Exception ek runtime error hai jo program ki normal flow disrupt karta hai.

Exception kya hai?

int[] arr = {1, 2, 3}; System.out.println(arr[5]); // ArrayIndexOutOfBoundsException!

Error vs Exception

Error — JVM level serious problem (OutOfMemoryError, StackOverflowError) — handle nahi karte
Exception — Recoverable problems — handle karte hain

Checked vs Unchecked

	Checked	Unchecked
--	--	--
Detect	Compile time	Runtime
Handle	Mandatory	Optional
Examples	IOException, SQLException	NullPointerException, ArithmeticException

Common Exceptions

Exception	Cause
`NullPointerException`	null object pe method call
`ArrayIndexOutOfBoundsException`	Invalid array index
`ClassCastException`	Invalid type cast
`ArithmeticException`	Division by zero
`NumberFormatException`	Invalid number format
`StackOverflowError`	Infinite recursion
`IOException`	File I/O error
`SQLException`	Database error

Exam Focus

Revise definitions, diagrams, examples, and short-answer points for Exception Handling.

Interview Use

Prepare one clear explanation, one practical example, and one common mistake for this Java topic.

Search Terms

java, java programming, core java, java master course, java notes, master, course, exception

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Exception HandlingException Handling Best Practicestitle: Exception Handling Best Practices Exception HandlingCustom Exceptiontitle: Custom Exception in Java Exception HandlingException Hierarchytitle: Exception Hierarchy Exception Handlingfinally Blocktitle: finally Block in Java Exception Handlingthrow aur throwstitle: throw aur throws in Java Exception Handlingtry-catchtitle: try-catch in Java

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