Which classes extending Throwable do not implement the Exception interface?

In Java, the class Throwable is the base for all errors and exceptions. It has two main subclasses: Exception and Error. The Exception interface as such does not exist, but there is a class Exception that extends Throwable.

Classes that extend Throwable but are not Exception are classes that inherit from Error. They represent serious errors that are usually not handled by the application, for example:

• java.lang.Error
• java.lang.OutOfMemoryError
• java.lang.StackOverflowError
• java.lang.VirtualMachineError

Thus, all classes that extend Throwable but are not Exception are subclasses of Error.