Final answer:
All exception classes inherit from Class Throwable.
Step-by-step explanation:
All exception classes inherit from Class Throwable. Throwable is the superclass for all errors and exceptions in Java. It is the ultimate base class for all Java exceptions, including both checked exceptions and unchecked exceptions. The Throwable class has two direct subclasses: Error and Exception. Out of these, all exception classes are derived from the Exception class.