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HomeHomework Helpcomputer-scienceException Handling in Java

Exception Handling in Java

Exception handling in Java is a mechanism to handle runtime errors, allowing the program to continue its normal flow even when unexpected events occur. It uses try-catch blocks to manage exceptions that may arise during program execution.

intermediate
2 hours
Computer Science
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Overview

Exception handling in Java is a crucial aspect of programming that allows developers to manage errors effectively. By using try-catch blocks, programmers can catch exceptions and handle them gracefully, ensuring that the application continues to run smoothly. This mechanism not only improves the use...

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Key Terms

Exception
An event that disrupts the normal flow of a program.

Example: An ArrayIndexOutOfBoundsException occurs when trying to access an invalid index of an array.

try block
A block of code that is tested for exceptions.

Example: try { int result = 10 / 0; } catch (ArithmeticException e) { }

catch block
A block of code that handles the exception thrown by the try block.

Example: catch (ArithmeticException e) { System.out.println(e.getMessage()); }

finally block
A block that executes after try-catch, regardless of whether an exception occurred.

Example: finally { resource.close(); }

throw
A keyword used to explicitly throw an exception.

Example: throw new IllegalArgumentException("Invalid argument");

custom exception
An exception defined by the user to handle specific error conditions.

Example: public class MyException extends Exception { }

Related Topics

Java Basics
Fundamentals of Java programming including syntax and data types.
beginner
Object-Oriented Programming
Principles of OOP such as inheritance, encapsulation, and polymorphism.
intermediate
Java Collections Framework
Understanding data structures in Java like lists, sets, and maps.
intermediate

Key Concepts

try-catch blockthrow keywordcustom exceptionsfinally block