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Top 20 Common Java Exceptions: Issues and Solutions with Code Snippets

Sanjay Singh
5 min readOct 12, 2024

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Introduction

Java, as one of the most popular programming languages, has a robust exception handling mechanism that helps developers identify and manage errors. In this article, we will explore the top 20 common exceptions in Java, complete with issue codes, possible causes, and effective solutions using Java 8 features. Each section will include code snippets to demonstrate best practices in handling these exceptions.

Top 20 Common Java Exceptions: Issues and Solutions with Code Snippets

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Table of Contents

  1. NullPointerException
  2. ArrayIndexOutOfBoundsException
  3. ClassCastException
  4. NumberFormatException
  5. IllegalArgumentException

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Sanjay Singh
Sanjay Singh

Written by Sanjay Singh

Java, Spring Boot & Microservices developer Sharing knowledge, tutorials & coding tips on my Medium page. Follow me for insights & see story list section

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