MalformedURLException

MalformedURLException is a checked exception in Java that is thrown when an application attempts to create a URL object from a string that is not a valid URL. This typically occurs when the string's format does not conform to the syntax rules for Uniform Resource Locators. For example, a missing protocol such as "http://" or an invalid character in the domain name can lead to this exception.

When a MalformedURLException is encountered, it signifies that the provided string cannot be interpreted as a proper URL. This can happen during network operations, such as trying to connect to a web server, or when parsing configuration files that contain URL information. The exception class is part of the java.net package.

To handle this exception, developers typically use a try-catch block. Inside the try block, code that might produce the exception, such as instantiating a URL object with a potentially invalid string, is placed. The catch block then intercepts the MalformedURLException, allowing the program to gracefully manage the error. This might involve logging the error message, displaying a user-friendly message, or attempting to use a default URL.

The exception constructor can accept a detail message string that provides more information about the specific reason for the malformation. Understanding the cause of a MalformedURLException is crucial for debugging network-related issues in Java applications.