Mastering Java: Exception Handling in Depth

Java

Welcome back to our Java series! In the previous article, we explored the core concepts of Object-Oriented Programming (OOP) in Java. Now, let’s delve into one of the most important aspects of robust Java applications: Exception Handling.

Exception handling is a powerful mechanism that handles runtime errors to maintain the normal flow of the application. Java provides a robust and flexible framework to handle exceptions gracefully.

1. Understanding Exceptions

What is an Exception?

An exception is an event that disrupts the normal flow of the program. It is an object that represents an error or unexpected behavior that occurs during the execution of a program.

Types of Exceptions:

• Checked Exceptions: Checked at compile-time (e.g., IOException, SQLException).
• Unchecked Exceptions: Checked at runtime (e.g., ArithmeticException, NullPointerException).
• Errors: Serious problems that are not intended to be caught by an application (e.g., OutOfMemoryError, StackOverflowError).

2. Exception Handling Mechanism

Java uses five keywords to handle exceptions: try, catch, finally, throw, and throws.