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4 days ago · Learn about the types and causes of built-in exceptions in Java, such as ArithmeticException, FileNotFoundException, ClassNotFoundException, etc. See Java programs and output for each exception and how to handle them.
- Built-In Exceptions in Java
- Types of Java Built-In Exceptions
- Common Built-In Exceptions in Java
- Examples of Java Built-In Exception
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Java defines several exception classes inside the standard package java.lang. The most general of these exceptions are subclasses of the standard type RuntimeException. Since java.langis implicitly imported into all Java programs, most exceptions derived from RuntimeException are automatically available.
Built-in Exceptions in Java are categorized into two categories Checked Exceptions and Unchecked Exceptions. 1. 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. 2. Unchecked Exceptions: The unchecked exceptio...
Java defines several other types of exceptions that relate to its various class libraries. Following is the list of Java Unchecked and Checked RuntimeException.
Example 1: Demonstrating Arithmetic Exception Without try-catch
In this example, we're creating an error by dividing a value by 0. In this case, an unchecked exception will be raised. Being unchecked, compiler won't complain and program will compile successfully. Once program runs, the exception will be thrown and JVM will intercepts the same and terminate the program before printing the last statement.
Example 2: Demonstrating Arithmetic Exception With try-catch
In this example, we're handling unchecked exception. As first step, we're generating an error by dividing a value by 0. In this case, an unchecked exception will be raised. We're handling via ArithmeticException. Once program runs, the exception will be thrown and catch block will intercepts the same and print the last statement.
Example 3: Demonstrating No Such Method Exception
In this example, we're showcasing that a checked exception is to be handled by code otherwise compiler will complain. Whenever a method throws a checked exception, it has to either handle the exception or declare throws exception statement as we're doing for getName() method. When we try to run the method, JVM complains the compilation problem as shown in output listed below:
Learn about the types and examples of built-in exceptions in Java, such as ArithmeticException, NullPointerException, and NoSuchMethodException. Find out how to handle checked and unchecked exceptions using try-catch blocks or throws statements.
Built-in Exception. Exceptions that are already available in Java libraries are referred to as built-in exception. These exceptions are able to define the error situation so that we can understand the reason of getting this error. It can be categorized into two broad categories, i.e., checked exceptions and unchecked exception. Checked Exception.
Aug 7, 2023 · Learn about exception handling in Java, including built-in exceptions, checked exceptions, unchecked exceptions, and user-defined exceptions. See examples, methods, and hierarchy of exceptions in Java.
Sep 11, 2023 · Learn about the built-in exceptions in Java libraries and how to handle them with try-catch blocks. See examples of ArithmeticException, NullPointerException, FileNotFoundException, and more.
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?
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May 11, 2024 · Learn the basics of exception handling in Java, including checked, unchecked, and error exceptions. See how to use try-catch, throws, and finally blocks to handle and recover from errors.
