Java reflection exception5/5/2023 ![]() ![]() There are times when there's a checked exception that we are confident will just never happen. Most of the time, it would be a little mean for us to do this because it doesn't address the issue and it keeps other code from being able to address the issue, too. The above is called swallowing an exception. When you attempt to invoke a method or constructor and it throws an underlying exception, that underlying exception is the actual cause of the occurrence of. ![]() We must handle these conditions because they affect the flow of the application negatively and form exceptions: public static List getPlayers() throws IOException // <= catch and swallow The method does some various checks on its arguments and can throw NullPointer and IllegalArgument exceptions. The mainly occurs while working with the reflection layer. The wellbeing of our code depends on how it deals with “unhappy paths”. Parameters: cause- the cause (which is saved for later retrieval by the Throwable.getCause()method). This constructor is useful for exceptions that are little more than wrappers for other throwables (for example, PrivilegedActionException). The reflection layer wraps any exception in an InvocationTargetException, which lets you tell the difference between an exception actually caused by a failure in the reflection call (maybe your argument list wasn't valid, for example) and a failure within the method called. In production, though, filesystems can corrupt, networks break down, and JVMs run out of memory. typically contains the class and detail message of cause). ![]()
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