Java Exception Handling Overview

16 Questions

What is an exception in Java?

An object that describes an error condition that has occurred in a piece of code

In computer languages that do not support exception handling, how are errors typically checked and handled?

Through the use of error codes

What happens when an exceptional condition arises in Java?

An object representing that exception is created and thrown in the method that caused the error

How are exceptions caught and processed in Java?

By the method that caused the error

What kind of errors do exceptions thrown by Java relate to?

Fundamental errors that violate the rules of the Java language or the constraints of the Java execution environment

When are manually generated exceptions typically used in Java?

To report some error condition to the caller of a method

What keyword is used to manually throw an exception in Java?

throw

Which keyword is used to monitor program statements for exceptions in Java?

try

What type of exceptions are automatically thrown by the Java run-time system?

Error

Which class is used for exceptional conditions that user programs should catch in Java?

Exception

What is the keyword used to specify that an exception is thrown out of a method in Java?

throws

What subclass of Exception defines exceptions that are not expected to be caught under normal circumstances by a program in Java?

Error

What is the top class in the exception class hierarchy in Java?

Throwable

Which keyword is used to put code that must be executed after a try block completes in Java?

finally

What is the subclass of Exception that includes things such as division by zero and invalid array indexing in Java?

RuntimeException

What is the class that should be subclassed to create custom exception types in Java?