Base class for Error and Exception? Throwable.

Throwable is the superclass of all errors and exceptions in the Java language.

Hierarchy:

• Object
  • Throwable
    • Error: Serious problems (OutOfMemory, StackOverflow). Apps should not catch these.
    • Exception: Problems that a well-written app might want to catch.
      • RuntimeException: Unchecked.
      • Checked Exceptions: Logic/Environment errors.