Unhandled Exceptions: Causes, Handling, and Best Practices

An unhandled exception occurs when an error or exception is thrown during the execution of a program, but there is no code to catch or handle the exception. This means that the program does not know how to recover from the error and it will terminate abruptly.

When an exception is thrown, the program searches for a 'catch' block that can handle the exception. If no suitable 'catch' block is found, the exception is considered unhandled. This can happen if the exception is thrown in a method that does not have a 'try-catch' block, or if the exception is thrown outside of any 'try-catch' blocks in the program.

When an unhandled exception occurs, the program will typically display an error message or stack trace indicating the details of the exception, and then terminate. It is important to handle exceptions properly in order to provide graceful error handling and prevent unexpected program termination.