Exception handling

A throw stamement is similar to...

a method call.

RuntimeException and its sub-classes

be caught by the catch block

Whenever an exception is thrown, it should ultimately be handled (or caught) by

catch block

The classes Throwable, Exception, and all descendants of the class Exception are ____________.

checked exceptions.

Error class

class that can catch all exceptions which cannot be caught

finally block

contains code to be executed whether or not an exception is thrown in a try block.

Nested try-catch blocks

different names must be used for the catch block parameters in the inner and outer blocks.

The class Error and all its descendant classes are called ________.

error classes

A throw statement can throw an

exception object of any exception class

The class Exception is in the. _______ , and so requires no ______

java.lang package, import statement

throw

keyword that is used to manually throw an exception

try

keyword that must be used to monitor for exceptions

Catch block parameter

names the value type, and names the value caught

getMessage returns the string

that is passed to its constructor as an argument

In exception handling

the event objects are the exception objects

The catch block parameter does two things:

1. It specifies the type of thrown exception object that the catch block can catch 2. It provides a name (for the thrown object that is caught) on which it can operate in the catch block

Predefined exception classes have the following properties:

1. There is a constructor that takes a single argument of type String 2. The class has an accessor method getMessage that can recover the string given as an argument to the constructor when the exception object was created

Rethrowing an Exception

A catch block can contain code that throws an exception

Catch block

A segment of code that can handle an exception that might be thrown by the try block that precedes it.

Finally and catch

A single try block can be followed by......

multiple catch blocks

A try block can be followed by ________________

Error classes are not subject to the ______________.

Catch or Declare rule

Checked exceptions must follow the _______________.

Catch or Declare rule.

Unchecked exceptions are exempt from the

Catch or Declare rule.

Try block

Contains the code for the basic algorithm. It can also contain code that throws an exception if something unusual happens.

an exception handler

Each catch clause that follows a try block is called:

Exception handling is an example of....

Event-driven programming

A catch block looks like a method definition that has a parameter of type

Exception class

Constructors are the most important members to define in an _________

Exception class

Run Time

Exceptions in Java arises in code sequence

checked exceptions

Exceptions that are subject to the catch or declare rule are called

default handler

Handles the exception when catch is not used

throws clause

If a method can throw an exception but does not catch it, it must provide a warning that is called.... In other words, is the keyword use for handling checked exceptions.

Throwable class

Is a super class of all errors and exceptions in the Java language

java.util.InputMismatchException

It is a descendent class of RuntimeException

getMessage()

Methods that return description of an exception

Event-driven programming

Objects are defined so that they send events to other objects that handle the events

firing an event

Sending an event

Throwing an exception

Some library software or your code provides a mechanism that signals when something unusual happens. Is the execution of the throw statement.

Throwable class

The built-in base class in Java, which is used to handle all exception

When an exception is thrown

The catch block beings execution

catching the exception

The execution of the catch block is called...

order of multiple catch blocks

The first one that matches the type of the exception thrown is the one that is executed

Declaring Exceptions

The process of including an exception class in a throws clause

Handling Exceptions

The programmer must provide code that deals with the exceptional case

Exception handler

This is a section of code that gracefully responds to exceptions. Often referred as the catch block.

Every exception class is a descendent class of the class

Throwable

Is the order of catch blocks important when catching multiple exceptions?

True