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BSIT-1 > IT102 JAVA SCANNER > Flashcards

IT102 JAVA SCANNER Flashcards

1
Q

When coding you often need to get information from the user. In Java you can use ______ ____to do this.

A

Scanner Class

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2
Q

Java Scanner helps you to read different types of ____like____,____,____

A

data , numbers(int, double), text(string), and true/false values(boolean)

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3
Q

The Scanner class is part of the _____.

A

java.util package.

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4
Q

The Scanner takes the user’s input and splits it into smaller parts, called _____. It usually uses whitespaces to separate these parts.

A

tokens

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5
Q

The Scanner takes the user’s input and splits it into smaller parts, called tokens. It usually uses _____ to separate these parts.

A

whitespaces

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6
Q

System: This is the ___ __ ____ in Java
Scanner: This is the name of the class
scannerName : This is the name you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

built in class

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7
Q

____: This is the built in class in Java
Scanner: This is the name of the class
scannerName : This is the name you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

System

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8
Q

System: This is the built in class in Java
____: This is the name of the class
scannerName : This is the name you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

Scanner

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9
Q

System: This is the built in class in Java
Scanner: This is the___ __ ___
scannerName : This is the name you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

name of the class

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10
Q

System: This is the built in class in Java
Scanner: This is the name of the class
____- : This is the name you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

scannerName

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11
Q

System: This is the built in class in Java
Scanner: This is the name of the class
scannerName : This is the ____ you give to your Scanner object. You can choose any name, like input, scanner, or reader.

A

name

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12
Q

_____: This creates the Scanner object and tells it where to get its input
System.in: for reading input for the keyboard
A file object: reading data from a file
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

New Scanner(inputSource)

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13
Q

New Scanner(inputSource): This creates the ___ ___and tells it where to get its input
System.in: for reading input for the keyboard
A file object: reading data from a file
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

Scanner object

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14
Q

New Scanner(inputSource): This creates the Scanner object and tells it where to get its input
____: for reading input for the keyboard
A file object: reading data from a file
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

System.in

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15
Q

New Scanner(inputSource): This creates the Scanner object and tells it where to get its input
System.in: for _____ for the ___
A file object: reading data from a file
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

reading input—keyboard

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16
Q

New Scanner(inputSource): This creates the Scanner object and tells it where to get its input
System.in: for reading input for the keyboard
_ ___ ___: reading data from a file
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

A file object

17
Q

New Scanner(inputSource): This creates the Scanner object and tells it where to get its input
System.in: for reading input for the keyboard
A file object: ____-
A string or input stream: means the Scanner can also read data from string or other sources like network data.

A

reading data from a file

18
Q

New Scanner(inputSource): This creates the Scanner object and tells it where to get its input
System.in: for reading input for the keyboard
A file object: reading data from a file
___ ___ ___: means the Scanner can also read data from string or other sources like network data.

A

A string or input stream

19
Q

Scanner class in java helps you read different kinds of input,making it easier for the users to work with your program. It has various ____, each designed for a specific type of data. Learning these methods will help you use the Scanner class effectively.

A

methods

20
Q

Scanner class in java helps you read different kinds of input,making it easier for the users to work with your program. It has various methods, each designed for a ____ ___ ___-. Learning these methods will help you use the Scanner class effectively.

A

specific type of data

21
Q

Scanner class in java helps you read different kinds of input,making it easier for the users to work with your program. It has various methods, each designed for a specific type of data. Learning these methods will help you use the ___ ___ ___.

A

Scanner class effectively

22
Q

If the user enters the wrong type of data - like typing letters when the program expects a number - they will see an error called ____ ____

A

InputMismatchException
METHODS

23
Q

The scanner class in java reads a whole line of input and breaks it into smaller parts called “——–” it uses a delimiter to separate these tokens a delimiter is just a character or group of characters that acts as a “seperator”

A

tokens

24
Q

The scanner class in java reads a whole line of input and breaks it into smaller parts called “tokens” it uses a ——- to separate these tokens a —– is just a character or group of characters that acts as a “seperator”

A

delimiter

25
Q

The scanner class in java reads a whole line of input and breaks it into smaller parts called “tokens” it uses a delimiter to separate these tokens a delimiter is just a character or group of characters that acts as a “——–”

A

seperator

26
Q

nextInt()for ——.
nextDouble() for —— —–.
nextLine() for —- —- —–

A

integers
decimal numbers
whole lines of text

27
Q

——for integers.
—— for decimal numbers.
——- for whole lines of text

A

nextInt()
nextDouble()
nextLine()

28
Q

——: after reading the input, you can use it in your program this might involve calculation checking if the input correct or other tasks

A

Process Input

29
Q

——-: Once you’re done reading input, it’s important to close the Scanner using the close() method. This helps free up the system resources and prevents issues later on.

A

Close the Scanner

30
Q

Close the Scanner: Once you’re done reading input, it’s important to close the Scanner using the ——. This helps free up the system resources and prevents issues later on.

A

close() method

31
Q

In java, particularly when using the scanner class, a “—- ——” occurs when there are residual newline characters in the input buffer that can interfere with subsequent input operations. This commonly happens when a combination of different input methods ( e.g nextTint() followed by nextline()) is used without properly handling the leftover newline character.

A

dangling next line

32
Q

In java, particularly when using the scanner class, a “dangling next line” occurs when there are residual newline characters in the input buffer that can interfere with subsequent input operations. This commonly happens when a combination of different input methods ( e.g nextTint() followed by nextline()) is used without properly handling the —– —– —–.

A

leftover newline character

33
Q

In java, particularly when using the scanner class, a “dangling next line” occurs when there are — —- —–in the input buffer that can interfere with subsequent input operations. This commonly happens when a combination of different input methods ( e.g nextTint() followed by nextline()) is used without properly handling the leftover newline character.

A

residual newline characters

34
Q

The Input buffer is like a — —- —–.

A

waiting room data

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