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Java Chapter 13 Revision Questions: File Handling and Data Structures, Exams of Computer Programming

Villanova UniversityComputer Programming

A comprehensive set of revision questions covering key concepts in java file handling and data structures. It explores topics such as file access methods, data organization, and file manipulation techniques. The questions are designed to test understanding of concepts like sequential and random access files, file channels, buffers, and data hierarchy. This resource is valuable for students learning java programming and seeking to solidify their understanding of file handling and data structures.

Typology: Exams

2024/2025

Available from 03/25/2025

victor-kiragu
victor-kiragu 🇺🇸

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Java Chapter 13 Revision Questions
______ is the Java class that allows the programmer to perform file
maintenance tasks ✓Files
A buffer _____. ✓a. holds bytes that are scheduled for input or output
A collection of data stored on a nonvolatile device in a computer system is
_____. ✓a file
A complete list of the disk drive plus the hierarchy of directories in which a
file resides is its _____ ✓path
A complete list of the disk drive plus the hierarchy of directories in which a
file resides is its ✓path
A file channel _____. ✓is seekable
A path that needs no other information to locate a file on a system is
_____. ✓an absolute path
A_________field in a record that makes the record unique from all others
✓key
Absolute path ✓a complete path; it does not need any other information to
locate a file on a system
Batch processing ✓processing that involves performing the same tasks
with many records, one after the other
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Download Java Chapter 13 Revision Questions: File Handling and Data Structures and more Exams Computer Programming in PDF only on Docsity!

Java Chapter 13 Revision Questions

______ is the Java class that allows the programmer to perform file maintenance tasks ✓Files A buffer _____. ✓a. holds bytes that are scheduled for input or output A collection of data stored on a nonvolatile device in a computer system is _____. ✓a file A complete list of the disk drive plus the hierarchy of directories in which a file resides is its _____ ✓path A complete list of the disk drive plus the hierarchy of directories in which a file resides is its ✓path A file channel _____. ✓is seekable A path that needs no other information to locate a file on a system is _____. ✓an absolute path A_________field in a record that makes the record unique from all others ✓key Absolute path ✓a complete path; it does not need any other information to locate a file on a system Batch processing ✓processing that involves performing the same tasks with many records, one after the other

Binary files ✓contain data that has not been encoded as text; their contents are in binary format Buffer ✓a memory location where bytes are held after they are logically output, but before they are sent to the output device Character ✓can be any letter number or special symbol (such as a punctuation mark) that comprises data Close the file ✓ensures a file no longer available to an application Comma-separated values (CSV) ✓files that are separated with a comma Computer file ✓a collection of stored information in a computer system Data files ✓consist of related records that contain facts and figures, such as employee numbers, names, and salaries Direct access files ✓another name for random access files Factory methods ✓methods that assist in object creation Field ✓a group of characters that has some meaning File channel object ✓an avenue for reading and writing a file files class ✓performs operations on files and directories

nonvolatile sotate ✓permanent storage; it is not lost whena computer loses power opens a file ✓creates an object and associates a stream of bytes with that object path ✓the complete list of the disk drive plus the hierarchy of directories in which a file resides path class ✓a Java class used to work with file information such as its location, size, creation date, and whether the file exists path delimiter ✓the character used to separate path components permanent storage devices ✓retain data even when poser is lost Program files or application files ✓store software instructions Random access files ✓files in which records can be retrieved directly in any order Random access memory (RAM) ✓temporary, volitale storage real-time ✓applications that require a record be accessed immediately while a client is waiting Real-time applications _____. ✓use random access files record ✓a collection of fields that contain data about an entity

relative path ✓one that depends on other path information root directory ✓main directory of a storage device, outside any folders seekable ✓describes a file channel in which you can search for a specific file location and in which operations can start at any specified position sequential access file ✓each record is stored in order based on the value in some field static import feature ✓allows you to use static constants without their class name stream ✓a data pipeline of channel text files ✓contain data that can be read in a text editor because the data has been encoded using a scheme such as ASCII or Unicode The data hierarchy occurs in the following order from the smallest to largest piece of data: _____. ✓character, field, record, file The newOutputStream() method ____. ✓All of the below: is defined in the Files class creates a file if it does not already exist opens a file for writing The Path class getFileName() method returns _____. ✓the last item in a Path's list of name elements The smallest useful piece of data to most people is the ✓character

Which of the following statements creates a Path named p to a FileStream named f? a. Path p = new Path("C:\Java\MyFile.txt"); b. Path p = f("C:\Java\MyFile.txt"); c. Path p = f.getPath("C:\Java\MyFile.txt"); d. Path p = getPath(new f("C:\Java\MyFile.txt")); ✓Path p = f.getPath("C:\ Java\MyFile.txt"); Which of the following statements is true? a. Volatile storage lasts only a few seconds. b. Volatile storage is lost when a computer loses power. c. Computer disks are volatile storage devices. d. All of the above are true. ✓ Which of the following systems is most likely to use batch processing? a. an airline reservation system b. payroll c. point-of-sale credit checking d. an e-mail application ✓payroll Wrapped ✓to be encompassed in another type You cannot delete a Path _____. ✓a. if it represents a directory that is not empty