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18 Questions

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Introduction to Java Scanner Class

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Questions and Answers

What is used in Java 5 and above to allow the user to enter their own values for the program?

Scanner class (correct)

PrintStream class

Hardcoded values

BufferedReader class

What is the problem with the program Add2Numbers.java mentioned in the text?

It doesn't use any classes

It has a syntax error

It always produces a result of 43 (correct)

It asks for too much user input

Which package does the Scanner class belong to?

java.util (correct)

java.awt

java.lang

java.io

What does the * in 'import java.util.*;' indicate?

All classes are available to the compiler Signup and view all the answers

What do you need to create first in order to use the Scanner class?

A Scanner object Signup and view all the answers

Which class allows reading keyboard input in a convenient manner in Java?

Scanner class Signup and view all the answers

Which method of the Scanner class is used to read in an integer?

nextInt() Signup and view all the answers

What does the following line of code do: `c = keyboardIn.next().charAt(0);`

Reads a character from the input Signup and view all the answers

How is a string literal defined?

A sequence of characters enclosed in quotation marks Signup and view all the answers

In Java, how can you create an instance of the Scanner class?

By importing java.util.Scanner Signup and view all the answers

What does the method `keyboardIn.nextDouble()` do?

Reads in a double value Signup and view all the answers

How is a value assigned to a string variable in Java?

<code>firstName = "Mary";</code> Signup and view all the answers

What does the nextLine() method of the Scanner class do?

Reads a line up until it reaches a white space Signup and view all the answers

Which class represents objects of string literals in Java?

<code>String</code> Signup and view all the answers

What is used to construct a Scanner object for reading input from the keyboard?

<code>keyboardIn = new Scanner(System.in);</code> Signup and view all the answers

What is used to represent the keyboard in Java?

<code>System.in</code> Signup and view all the answers

Which method reads a line up until it reaches a white space?

<code>next()</code> Signup and view all the answers

What does the following line of code do: `firstName = new String();`?

Calls constructor of empty string Signup and view all the answers

Introduction to Java Scanner Class

Choose a study mode

Podcast

Questions and Answers

What is used in Java 5 and above to allow the user to enter their own values for the program?

What is the problem with the program Add2Numbers.java mentioned in the text?

Which package does the Scanner class belong to?

What does the * in 'import java.util.*;' indicate?

What do you need to create first in order to use the Scanner class?

Which class allows reading keyboard input in a convenient manner in Java?

Which method of the Scanner class is used to read in an integer?

What does the following line of code do: `c = keyboardIn.next().charAt(0);`

How is a string literal defined?

In Java, how can you create an instance of the Scanner class?

What does the method `keyboardIn.nextDouble()` do?

How is a value assigned to a string variable in Java?

What does the nextLine() method of the Scanner class do?

Which class represents objects of string literals in Java?

What is used to construct a Scanner object for reading input from the keyboard?

What is used to represent the keyboard in Java?

Which method reads a line up until it reaches a white space?

What does the following line of code do: `firstName = new String();`?

More Like This

Java Scanner Class Quiz

Java Scanner Class Overview

Java Scanner Class Flashcards

Java User Input Basics Quiz

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Introduction to Java Scanner Class

Choose a study mode

Podcast

Questions and Answers

What is used in Java 5 and above to allow the user to enter their own values for the program?

What is the problem with the program Add2Numbers.java mentioned in the text?

Which package does the Scanner class belong to?

What does the * in 'import java.util.*;' indicate?

What do you need to create first in order to use the Scanner class?

Which class allows reading keyboard input in a convenient manner in Java?

Which method of the Scanner class is used to read in an integer?

What does the following line of code do: c = keyboardIn.next().charAt(0);

How is a string literal defined?

In Java, how can you create an instance of the Scanner class?

What does the method keyboardIn.nextDouble() do?

How is a value assigned to a string variable in Java?

What does the nextLine() method of the Scanner class do?

Which class represents objects of string literals in Java?

What is used to construct a Scanner object for reading input from the keyboard?

What is used to represent the keyboard in Java?

Which method reads a line up until it reaches a white space?

What does the following line of code do: firstName = new String();?

More Like This

Java Scanner Class Quiz

Java Scanner Class Overview

Java Scanner Class Flashcards

Java User Input Basics Quiz

What does the following line of code do: `c = keyboardIn.next().charAt(0);`

What does the method `keyboardIn.nextDouble()` do?

What does the following line of code do: `firstName = new String();`?