Comprog Mocktest (Midterm) BSIT 205

61問 • 1年前

Xai Alexandrei Delos Reyes

通報

問題一覧

is an event that occurs during the execution of a program that disrupts the normal flow of instructions.

Exception

is the process used to change the normal flow of code execution if a specified exception occurs.

Exception Handling

Exceptions that occur during compilation are called

Checked Exceptions

The class is not found.

ClassNotFoundException

Access to a class is denied.

IllegalAccessException

Attempt to create an object of an abstract class or an interface.

InstantiationException

A requested method does not exist.

NoSuchMethodException

are exceptions that occur during execution. These are also known as runtime exceptions.

Unchecked Exceptions

Arithmetic error, such as an integer divided by 0

ArithmeticException

Accessing an invalid index of the array

ArrayIndexOutOfBoundsException

Assigning a value to an array index that does not match the expected data type

ArrayStoreException

Entering a value that does not match the expected data type

InputMismatchException

Invalid use of a null reference

NullPointerException

Invalid conversion of a string to a numeric format

NumberFormatException

Accessing an invalid index (character) of a string

StringIndexOutOfBoundsException

It is a block of code that might throw an exception that can be handled by a matching catch block

Try Block

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

Catch Block

method can be used to determine Java’s message about the exception.

getMessage();

Only one (1) catch block is accepted in a program but there can be multiple try blocks.

False

is created by extending the Exception class.

User-Defined Exception

contains statements which are executed whether or not an exception is thrown.

Finally Block

sends an exception out of a block or a method so it can be handled elsewhere.

Throw statement

what's the catch block for a ArithmeticException?

catch(ArithmeticException ex) {

is temporary.____ values (stored in variables) are lost when the computer loses its power.

Volatile Storage

is permanent. A Java program that is saved on a disk uses a ____?

Non-Volatile Storage

is a collection of data stored on a non-volatile device.

Computer files

consists of data that can be read in a text editor. Data in a text file is encoded using a scheme.

Text file

contains data that is not encoded as text. which means they cannot be understood by viewing them in a text editor.

Binary file

the special character used to separate path components.

creates objects that contain information about files and directories, such as sizes, locations, creation dates, and is used to check whether a file or directory exists

Path class

performs operations on files and directories, such as determining their attributes, creating input and output streams, and deleting them.

Files class

To use both the Path and Files classes, what statement should be used?

import java.nio.file.*;

is a complete path; it does not require any other information to locate a file on a system

Absolute path

C:\Java\Chapter8\sample.txt is an example of?

Absolute path

- sample.txt - Chapter8\sample.txt - Java\Chapter8 are examples of ?

Relative path

is a group of characters that has some meaning.

Fields

is a collection of fields that contain data about an entity.

Record

It consists of related records.

File

If the data is taken from a source (such as a file or the keyboard) and is delivered into a program, it is called an _____

input stream

If the data is delivered from a program to a destination (such as a file or the screen), it is called an ______

output stream

It is a flow of data.

stream

What is the correct syntax of Path class using this directory? C:\Java\Chapter8\sample.txt

Path file Paths.get("C:\\Java\\Chapter8\\sample.txt");

Returns the String representation of the Path, eliminating double backslashes

String toString()

Returns the file or directory denoted by this Path; this is the last item in the sequence of name elements.

Path getFileName()

Returns the number of name elements in the Path

int getNameCount()

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

Path getName(int)

is a memory location into which you can write data, which you can read again later.

Buffer

Abstract class that contains method for performing input

InputStream

Provides the capability to read disk from files

FileInputStream

Abstract class that contains method for performing output

OutputStream

Provides the capability to write to disk files

FileOutputStream

Handles input from a system’s standard or default output device (usually the monitor)

BufferedOutputStream

Contains methods for performing output that never throws an exception

PrintStream

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

Reader

Reads text from a character-input stream, buffering characters to provide for efficient reading of characters, arrays, and lines

BufferedReader

Reads text from a character-input stream, buffering characters to provide for efficient reading of characters, arrays, and lines

BufferedReader

Writes text to a character-output stream, buffering characters to provide for the efficient writing of characters, arrays, and lines

BufferedWriter

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

READ

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

WRITE

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

EXECUTE

Checks whether the file exists

NONE

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問題一覧

is an event that occurs during the execution of a program that disrupts the normal flow of instructions.

Exception

is the process used to change the normal flow of code execution if a specified exception occurs.

Exception Handling

Exceptions that occur during compilation are called

Checked Exceptions

The class is not found.

ClassNotFoundException

Access to a class is denied.

IllegalAccessException

Attempt to create an object of an abstract class or an interface.

InstantiationException

A requested method does not exist.

NoSuchMethodException

are exceptions that occur during execution. These are also known as runtime exceptions.

Unchecked Exceptions

Arithmetic error, such as an integer divided by 0

ArithmeticException

Accessing an invalid index of the array

ArrayIndexOutOfBoundsException

Assigning a value to an array index that does not match the expected data type

ArrayStoreException

Entering a value that does not match the expected data type

InputMismatchException

Invalid use of a null reference

NullPointerException

Invalid conversion of a string to a numeric format

NumberFormatException

Accessing an invalid index (character) of a string

StringIndexOutOfBoundsException

It is a block of code that might throw an exception that can be handled by a matching catch block

Try Block

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

Catch Block

method can be used to determine Java’s message about the exception.

getMessage();

Only one (1) catch block is accepted in a program but there can be multiple try blocks.

False

is created by extending the Exception class.

User-Defined Exception

contains statements which are executed whether or not an exception is thrown.

Finally Block

sends an exception out of a block or a method so it can be handled elsewhere.

Throw statement

what's the catch block for a ArithmeticException?

catch(ArithmeticException ex) {

is temporary.____ values (stored in variables) are lost when the computer loses its power.

Volatile Storage

is permanent. A Java program that is saved on a disk uses a ____?

Non-Volatile Storage

is a collection of data stored on a non-volatile device.

Computer files

consists of data that can be read in a text editor. Data in a text file is encoded using a scheme.

Text file

contains data that is not encoded as text. which means they cannot be understood by viewing them in a text editor.

Binary file

the special character used to separate path components.

creates objects that contain information about files and directories, such as sizes, locations, creation dates, and is used to check whether a file or directory exists

Path class

performs operations on files and directories, such as determining their attributes, creating input and output streams, and deleting them.

Files class

To use both the Path and Files classes, what statement should be used?

import java.nio.file.*;

is a complete path; it does not require any other information to locate a file on a system

Absolute path

C:\Java\Chapter8\sample.txt is an example of?

Absolute path

- sample.txt - Chapter8\sample.txt - Java\Chapter8 are examples of ?

Relative path

is a group of characters that has some meaning.

Fields

is a collection of fields that contain data about an entity.

Record

It consists of related records.

File

If the data is taken from a source (such as a file or the keyboard) and is delivered into a program, it is called an _____

input stream

If the data is delivered from a program to a destination (such as a file or the screen), it is called an ______

output stream

It is a flow of data.

stream

What is the correct syntax of Path class using this directory? C:\Java\Chapter8\sample.txt

Path file Paths.get("C:\\Java\\Chapter8\\sample.txt");

Returns the String representation of the Path, eliminating double backslashes

String toString()

Returns the file or directory denoted by this Path; this is the last item in the sequence of name elements.

Path getFileName()

Returns the number of name elements in the Path

int getNameCount()

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

Path getName(int)

is a memory location into which you can write data, which you can read again later.

Buffer

Abstract class that contains method for performing input

InputStream

Provides the capability to read disk from files

FileInputStream

Abstract class that contains method for performing output

OutputStream

Provides the capability to write to disk files

FileOutputStream

Handles input from a system’s standard or default output device (usually the monitor)

BufferedOutputStream

Contains methods for performing output that never throws an exception

PrintStream

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

Reader

Reads text from a character-input stream, buffering characters to provide for efficient reading of characters, arrays, and lines

BufferedReader

Reads text from a character-input stream, buffering characters to provide for efficient reading of characters, arrays, and lines

BufferedReader

Writes text to a character-output stream, buffering characters to provide for the efficient writing of characters, arrays, and lines

BufferedWriter

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

READ

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

WRITE

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

EXECUTE

Checks whether the file exists

NONE