A44 OOP Exception Handling

The checked Exceptions should inherit from the following classes:

• Throwable

• RuntimeException

• Object

• Exception

The unchecked Exceptions should inherit from the following classes:

• Throwable

• RuntimeException

• Object

• Exception

What is correct hierarchal order of the following classes?

(Start from the most general to the most specific)

• RuntimeException

• Exception

• ArithmeticException

• Object

• Throwable

Match the following

• Unchecked

  Exception

• Irrecoverable

• Error

• Compile-time exceptions

• Checked Exception

• Runtime exceptions

If the input is valid int number what will be printed?

• Enter a number to divide:

• Enter a number to divide:

  User input done.

• Enter a number to divide:

  Invalid user input ! Integer number is expected.

  User input done.

• Nothing will be printed

What is the result of the program?

• Compilation error

• Invalid user input ! Dividing by 0 is not allowed.

• I'm first!

• No I'm first!

Match the following

• when if-else can be used

• Don't ignore/swallow exceptions

• rethrow in catch block

• Don't log and

• leave empty catch block

• Don't catch Throwable

• specific exception first

• Catch the most

• It will not only catch all exceptions, it will also catch all errors

• Don't use exceptions