Exception Hierarchy for selenium automation learning

Exception Hierarchy

                    +--------+
                    | Object |
                    +--------+
          |
          |
                   +-----------+
     | Throwable |
                   +-----------+
                    /         \
     /           \
          +-------+          +-----------+
          | Error |          | Exception |
          +-------+          +-----------+
    /  |  \           / |        \
         \________/   \______/      \
                   +------------------+
 unchecked  checked | RuntimeException |
     +------------------+
       /   |    |      \
      \_________________/
        
        unchecked

• most of the built-in exceptions (e.g., NullPointerException, IndexOutOfBoundsException) are unchecked.
• IOExceptions (e.g., FileNotFoundException) are checked
• user-defined exceptions should usually be checked, so they should be subclasses of Exception.