CH 11. JAVA
The ________________ tag in a method's documentation comment must appear after the general description of the method.
@exception
__________________ allows you to write data of any primitive type or String objects to a binary file. Cannot directly access a file. It is used in conjunction with aFileOutputStream object that has a connection to a file
DataOutputStream
_____________ and ______________ are derived from theThrowable class
Error, Exception
Most exceptions are derived from the _____________ class
Exception
The NumberFormatException class is derived from the _____________ class
Exception
When opening a file in "r" mode where the file does not exist, a ______________________ will be thrown
FileNotFoundException
____________________ allows you to open a file for writing binary data. It provides only basic functionality for writing bytes to the file
FileOutputStream
Opening a file in "r" mode and trying to write to it will throw an ____________________
IOException
The NumberFormatException class is derived from the _____________________________ class.
IllegalArgumentException
Exception objects are created from classes in the ___________ _________ hierarchy of exception classes
JAVA API
Beginning in _________ ___ you can specify more than one exception in a catch clause
Java 7
The ______________________ class is designed to perform the serialization process
ObjectOutputStream
To create and work with random access files in Java, you use the ___________________ class
RandomAccessFile
_____________________ serves as a superclass for exceptions that result from programming errors.
RuntimeExceptions
___________ exceptions are those that are derived from the Error class or the RuntimeException class
Unchecked
_________________ exceptions will crash a program
Unhandled
A file that contains binary data is often called a ___________ ___________.
binary file
The FileOutputStream constructor takes an optional second argument which must be a ______________ value
boolean
The __________ __________ is an internal list of all the methods that are currently executing
call stack
After the try block, a _____________ clause appears
catch
The JVM will run the first compatible _________ clause found
catch
What are the 2 categories of exceptions?
checked, unchecked
If there is no exception handler inside the method:
control of the program is passed to the previous method in the call stack
The ______________ exception handler deals with unhandled exceptions
default
The _______________ exception handler prints an error message and crashes the program
default
The process of reading a serialized object's bytes and constructing an object from them is known as ___________________.
deserialization
An _______________ is an object that is generated as the result of an error or an unexpected event
exception
An _________________ ______________ is a section of code that gracefully responds to exceptions
exception handler
The process of intercepting and responding to exceptions is called _______________ ____________
exception handling
T/F After an exception, the program will not continue execution at the point just past the catch block
false
T/F The code in the try block is not capable of throwing more than one type of exception
false
The _______ ____________ holds the byte number of a location in the file
file pointer
If present, the _____________ clause must appear after all of the catch clauses
finally
The statements in the _____________ block execute whether an exception occurs or not
finally
Each exception object has a method named _______________ that can be used to retrieve the default error message for the exception
getMessage
An exception is an ____________
object
The Integer class's _____________ method throws a NumberFormatException object
parseInt
When handling exceptions, you can use a _______________ reference as a parameter in the _____________ clause
polymorphic, catch
In _______________ file access, a program may immediately jump to any location in the file
random
The way data is stored in memory is sometimes called the ________ _________ _________.
raw binary format
The ______________ method returns the deserialized object
readObject
The DataInputStream class's _________________ method reads from the file
readUTF
In RandomAccessFile, "r" means:
reading
In RandomAccessFile, "rw" means:
reading and writing
If you open a file in "_____" mode and the file does not exist, it will be created
rw
Text files and the binary files previously shown use _______________ file access
sequential
Java allows you to _____________ objects, which is a simpler way of saving objects to a file
serialize
A _________ ___________ is a list of all the methods in the call stack
stack trace
The _________ class, as many others in the Java API, implements the Serializable interface
string
Find the error: try { number = Integer.parseInt(str); } catch (IllegalArgumentException e) { System.out.println("Bad number format."); } catch (NumberFormatException e) { System.out.println(str + " is not a number."); }
swap NFE and IAE (error is second catch)
The ____________ statement is used to manually throw an exception
throw
All of the exception classes in the hierarchy are derived from the _______________ class
throwable
Exception are said to have been ______________
thrown
The __________ clause informs the compiler what exceptions can be thrown from a method
throws
T/F A catch clause needs to be written for each type of exception that could potentially be thrown
true
T/F A catch clause that uses a parameter variable of the Exception type is capable of catching any exception that is derived from theException class
true
T/F A try statement may have only one catch clause for each specific type of exception
true
T/F All exceptions that are not derived from Error or RuntimeException are checked exceptions
true
T/F If the argument is true, the file will not be erased if it exists; new data will be written to the end of the file
true
T/F Storing data in its binary format is more efficient than storing it as text
true
T/F The Serializable interface has no methods or fields
true
T/F The application will not halt if the try block throws an exception
true
T/F The catch clauses must be listed from most specific to most general
true
T/F The code in the catch block is executed if the try block throws an exception
true
T/F The following code will write a string to a file: String name = "Chloe"; outputFile.writeUTF(name)
true
T/F The parameter must be of a type that is compatible with the thrown exception's type
true
T/F There can be many polymorphic catch clauses.
true
T/F When an exception is thrown, it cannot be ignored
true
T/F When an object is serialized, it is converted into a series of bytes that contain the object's data.
true
T/F the following code will read a string from a file: String name = inputFile.readUTF();
true
To handle an exception, you use a _________ statement
try
A DataOutputStream object is ___________ around a FileOutputStream object to write data to a binary file
wrapped
To serialize an object and write it to the file, theObjectOutputStream class's _____________ method is used
writeObject
To write a string to a binary file, use theDataOutputStream class's _______________ method
writeUTF
When you want to separate exceptions which symbol should you use
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