Midterms

Question 1

Process of identifying and rectifying errors in a program

Answer 1

Debugging

Question 2

Typical debugging process

Answer 2

• Examining error symptoms
• Identifying the cause
• Fixing the error

Question 3

Fully understand the problem before making changes

Answer 3

Understanding the problem

Question 4

Works backward through the code to find out how it happened.

Answer 4

Backtracking / Backward Debugging

Question 5

Can give insights into how the code functions

Answer 5

Debugging Tools

Question 6

Example of debugging tools

Answer 6

Chrome DevTools, Testsigma, dbForger

Question 7

The point in the code to temporarily stop the execution of the program to inspect the state of its functionality.

Answer 7

Breakpoints

Question 8

To manually move through each line of code

Answer 8

Stepping

Question 9

Code is divided into
halves and systematically narrowing the bug location.

Answer 9

Binary Search

Question 10

Analogy for explaining an object like a rubber duck to someone else

Answer 10

Rubber Ducking

Answer 11

Log Analysis

Question 12

Group error reports into classes of related bugs as they often share common causes or patterns

Answer 12

Clustering Bugs

Question 13

Documenting the process and the solutions

Answer 13

Take Notes

Question 14

Unexpected or error condition encountered in programming

Answer 14

Exception

Question 15

object-oriented techniques that manage or resolve errors

Answer 15

Exception Handling

Question 16

Unplanned exception occurs during a program’s execution

Answer 16

Runtime Error

Question 17

Unplanned exception discovered during program compilation

Answer 17

Syntax Error

Question 18

represents more serious errors that a program usually might not recover from

Answer 18

Error class

Question 19

Represents less serious errors that indicate unusual conditions that arise

Answer 19

Exception class

Question 20

The base class for exceptions thrown while accessing data from files

Answer 20

IOException

Question 21

Only detected during the execution of the application.

Answer 21

RuntimeException

Question 22

Raised whenever a wrong mathematical operation appears

Answer 22

ArithmeticException

Question 23

Thrown when an index used in arrays, lists, or strings is invalid.

Answer 23

IndexOutOfBounds

Question 24

Indicates that an array has been accessed with an illegal
index

Answer 24

ArrayIndexOutOfBounds

Question 25

Indicates that the element being requested does not exist.

Answer 25

NoSuchElementException

Question 26

Occurs when the user does not provide the proper type of input or input is out of range

Answer 26

InputMismatchException

Question 27

indicates that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating.

Answer 27

VirtualMachineError

Question 28

thrown when there is insufficient space to allocate an object.

Answer 28

OutOfMemoryError

Question 29

indicates unexpected internal error has occurred in the Java Virtual Machine

Answer 29

InternalError

Question 30

Meaning that it ended prematurely with an error.

Answer 30

Crash

Question 31

The list of error messages, which shows each method called as the program ran

Answer 31

Stack Trace

Question 32

Placed when a code might cause an error. It is the block of code a programmer might attempt to execute while acknowledging that an exception might occur

Answer 32

try block

Question 33

Code that handles an exception that might be thrown by the try block that precedes it

Answer 33

catch block

Question 34

Sends an Exception object out of a block or method so it can be handled elsewhere

Answer 34

Throw statement

Question 35

Executes whether or not the preceding try block identifies an Exception. Used to perform cleanup task

Answer 35

finally block

Question 36

Collection of data stored on a nonvolatile device or a permanent storage

Answer 36

Computer File

Question 37

Contain data that can be read in a text editor as the data is encoded using a scheme. Can be data file or application

Answer 37

Text Files

Question 38

Contain data items that have not been encoded as text. Ex: music, images, .class extension

Answer 38

Binary Files

Question 39

Can be used to store a permanent file

Answer 39

Root Directory

Question 40

Complete list of the disk drive and the hierarchy of directories in which a file resides

Answer 40

Path

Question 41

Path identifier for Windows

Answer 41

Backslash "\"

Question 42

Used as the delimiter in the Solaris

Answer 42

Forward slash "/"

Question 43

Creates objects containing information about files and directories, including their locations, sizes, creation dates, and whether they exist

Answer 43

Path Class

Question 44

Performs operations on files and directories, including deletion, determining their attributes, and creating input and output streams.

Answer 44

Files class

Question 45

Can be included in a Java program to use both the Path and Files classes.

Answer 45

java.nio.file.*

Question 46

An object that creates other objects.

Answer 46

Factory

Question 47

Is considered a helper class that eliminates the need to create a FileSystem object.

Answer 47

Paths Class

Question 48

A complete path that does not need any information to locate a file on a system

Answer 48

Absolute path

Question 49

Depends on other path information

Answer 49

Relative path

Question 50

What kind of path is C:\\Java\\Chapter.11\\SampleFile.txt

Answer 50

Absolute path

Question 51

How to convert a relative path to an absolute path

Answer 51

toAbsolutePath()

Question 52

Returns the String representation of the path, eliminating double backslashes.

Answer 52

String toString()

Question 53

Returns the file or directory denoted by this Path

Answer 53

path getFileName()

Question 54

Returns the number of name elements in the Path

Answer 54

int getNameCount()

Question 55

Returns the name in the position of the Path specified by the integer parameter

Answer 55

Path getName(int)

Question 56

Used to verify that a file exists and that the program can access it as needed.

Answer 56

checkAccess()

Question 57

Checks that the file exists. Alternative to checkAccess

Answer 57

No argument

Question 58

Checks that the file exists and the program has permission to read the file

Answer 58

Read

Question 59

Checks that the file exists and the program has permission to write to the file

Answer 59

Write

Question 60

Checks that the file exists and the program has permission to execute the file

Answer 60

Execute

Question 61

Can retrieve useful information about a file

Answer 61

readAttributes()

Question 62

How are FileTime objects represented

Answer 62

yyyy-mm-ddThh:mm:ss

Question 63

An abstract class that contains methods for performing input

Answer 63

InputStream

Question 64

Child of InputStream that provides the capability to read from disk files

Answer 64

FileInputStream

Question 65

Child of FilterInputStream handles input from a system’s standard input device

Answer 65

BufferedInputStream

Question 66

An abstract class that contains methods for performing output

Answer 66

OutputStream

Question 67

Child of FilterOutputStream that handles output from a system’s standard output device,

Answer 67

BufferedOutputStream

Question 68

Child of OutputStream that allows writing to disk files

Answer 68

FIleOutputStream

Question 69

Child of FilterOutputStream. Java’s System class contains a PrintStream object named System.out

Answer 69

Print Stream

Question 70

Abstract class for reading character streams; the only methods that a subclass must implement are read(char[], int, int) and close()

Answer 70

Reader