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The Exception Handling in Java is one of the powerful mechanism to handle the runtime errors so that the normal flow of the application can be maintained. In this tutorial, we will learn about Java exceptions, it's types, and the difference between checked and unchecked exceptions. What is Exception in Java?
In Java, we already have some built-in exception classes like ArrayIndexOutOfBoundsException, NullPointerException, and ArithmeticException. These exceptions are restricted to trigger on some predefined conditions. In Java, we can write our own exception class by extends the Exception class.
The Exception class has a set of sub-classes for handling different types of exceptions such as IOException, NotBoundException, and NotOwnerException etc. All the subclasses of the Exception class are in the form of Throwable that indicates the conditions that an application wants to catch.
An exception (or exceptional event) is a problem that arises during the execution of a program. When an Exception occurs the normal flow of the program is disrupted and the program/Application terminates abnormally, which is not recommended, therefore, these exceptions are to be handled.
You can throw an exception, either a newly instantiated one or an exception that you just caught, by using the throw keyword. Try to understand the difference between throws and throw keywords, throws is used to postpone the handling of a checked exception and throw is used to invoke an exception explicitly. Syntax.
Jul 5, 2024 · Exception Handling in Java is one of the effective means to handle runtime errors so that the regular flow of the application can be preserved. Java Exception Handling is a mechanism to handle runtime errors such as ClassNotFoundException, IOException, SQLException, RemoteException, etc.
Jul 3, 2024 · Exception Handling is a critical aspect of Java programming, and following best practices for exception handling becomes even more important at the industry level where software is expected to be highly reliable, maintainable, and scalable. In this article, we will discuss some of the best practices for exception handling in Java that are relevant
Built-in Exceptions in Java are categorized into two categories Checked Exceptions and Unchecked Exceptions. Checked Exceptions: The checked exceptions are handled by the programmer during writing the code, they can be handled using the try-catch block. These exceptions are checked at compile-time.
Jul 9, 2019 · Getting Started with Exception Handling in Java. Details. Written by Nam Ha Minh. Last Updated on 09 July 2019   |   Print Email. If you are a beginner, this Java tutorial helps you get started with exception handling in Java by understanding how to handle errors and exceptional circumstances in Java programs.
Sep 11, 2023 · Below is the list of important built-in exceptions in Java. ArithmeticException: It is thrown when an exceptional condition has occurred in an arithmetic operation. ArrayIndexOutOfBoundsException: It is thrown to indicate that an array has been accessed with an illegal index.
