CH15_Files

With a _____, many "logical" chunks of data from a file are read as one large physical input operation into a memory buffer. This procedure is sometimes referred to as a logical input operation.

BufferedInputStream

_____ is an I/O-performance-enhancement technique.

Buffering

_____ output and input data in its binary format—a char is two bytes, an int is four bytes, a double is eight bytes, etc.

Byte-based streams

_____ output and input data as a sequence of characters in which every character is two bytes—the number of bytes for a given value depends on the number of characters in that value.

Character-based streams

_____ interface—Objects of classes that implement this interface enable a program to iterate through the contents of a directory.

DirectoryStream

Method readObject throws an _____ if an attempt is made to read beyond the end of the file.

EOFException

True/False: The data in many sequential files can be modified without the risk of destroying other data in the file.

False

A _____ occurs if the file does not exist and a new file cannot be created.

FileNotFoundException

_____ class—Provides static methods for common file and directory manipulations, such as copying files; creating and deleting files and directories; getting information about files and directories; reading the contents of files; getting objects that allow you to manipulate the contents of files and directories; and more.

Files

Class _____ enables formatted data to be output to any text-based stream in a manner similar to method System.out.printf.

Formatter

A _____ occurs if the Formatter is closed when you attempt to output.

FormatterClosedException

Class _____ displays a dialog that enables the user to easily select files or directories.

JFileChooser

A _____ occurs if the data being read by a Scanner method is in the wrong format or if there is no more data to input.

NoSuchElementException

To use serialization with files, initialize _____ and _____ objects that read from and write to files.

ObjectInputStream, ObjectOutputStream

_____ interface—Objects of classes that implement this interface represent the location of a file or directory. Objects of this interface do not open files or provide any file-processing capabilities.

Path

_____ class—Provides static methods used to get a Path object representing a file or directory location.

Paths

Class _____ is used extensively to input data from the keyboard. This class can also read data from a file.

Scanner

A _____ occurs if the user does not have permission to write data to the file.

SecurityException

Static method _____ terminates an application. An argument of 0 indicates successful program termination. A nonzero value, normally indicates that an error has occurred.

System.exit

Explain some classes: BufferedReader, BufferedWriter, CharArrayReader, CharArrayWriter, LineNumberReader, InputStreamReader, OutputStreamWriter, PipedReader, PipedWriter, StringReader, StringWriter, and PrintWriter

There is no definition for this question. Located on last few slides of ch15_jhtp10_TC_YC slide deck.

True/False: Java imposes no structure on a file

True

When using a Formatter, if the specified file already exists, its contents will be _____. If a file does not exist _____.

Truncated, it will be created

A _____ is a more general form of the Uniform Resource Locators (URLs) that are used to locate websites. On Windows platforms, an example looks like the following: file://C:/data.txt

Uniform Resource Identifier (URI)

Files created using byte-based streams are referred to as _____ files.

binary

Formatter method _____ closes the file. If the method is not called explicitly, the operating system normally will close the file when program execution terminates.

close

After a serialized object has been written into a file, it can be read from the file and _____ to recreate the object in memory.

deserialized

Every operating system provides a mechanism to determine the end of a file, such as an _____ a count of the total bytes in the file that is recorded in a system-maintained administrative data structure.

end-of-file marker

A partially filled buffer can be forced out to the device at any time by invoking the stream object's _____ method.

flush

Formatter method _____ works like System.out.printf.

format

A Java program _____ a file by creating an object and associating a stream of bytes or characters with it.

opens

Class System provides methods setIn, setOutandsetErr to _____ the standard input, output and error streams, respectively.

redirect

To read an entire object from or write an entire object to a file, Java provides object _____.

serialization

A _____ is represented as a sequence of bytes that includes the object's data and its type information.

serialized object

Call method _____ specifies what the user can select from the fileChooser. For this program, we use JFileChooser static constant FILES_AND_DIRECTORIES to indicate that files and directories can be selected. Other static constants include FILES_ONLY(the default) and DIRECTORIES_ONLY.

setFileSelectionMode

Java views each file as a sequential _____.

stream of bytes

Interface Serializable is a _____ interface. It does not contain methods.

tagging

Files created using character-based streams are referred to as _____ files.

text

In a class that implements Serializable, every variable must be Serializable. Any one that is not must be declared _____ so it will be ignored during the serialization process.

transient

ObjectOutputinterface method _____ takes an Object as an argument and writes its information to an OutputStream. ObjectInputinterface method _____ reads and returns a reference to an Object from an InputStream.

writeObject, readObject