Introduction to Scanner Class in Java

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17 Questions

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

Scanner class

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

It always gives a result of 43

In order to make the Scanner class accessible to the compiler, what do we need to do?

Import java.util.Scanner;

What does the asterisk () mean when used in 'import java.util.;'?

It imports all classes in the util package

Which class allows us to read keyboard input in a convenient manner in Java?

Scanner class

What type of values can be entered using the Scanner class in Java?

User-entered values at runtime

What is used to read input from the keyboard?

Scanner class

Which method is used to read an integer value using the Scanner class?

nextIntValue()

How is a sequence of characters enclosed in quotation marks defined?

String literal

How can you declare a string object in Java?

stringObject = new String();

Which method is used to read a line up until it reaches a white space?

nextType()

What object should be passed to the Scanner constructor to read input from the keyboard?

System.in

What method is used to read in a double using the Scanner class?

nextDouble()

What should be used to read the first character of a string input using the Scanner object?

keyboardIn.next().charAt(0)

What method is used to print the initials entered by the user in the 'Initials' class example?

System.out.print()

What is used to prompt the user to enter a value in the 'IntegerInput' class example?

System.out.print()

Which method reads a line up until it reaches 'Enter' using the Scanner object?

nextLine()

Learn about the Scanner class in Java which allows users to input values for the program to act upon. This quiz covers the basics of using the Scanner class and its implementation in Java 5 and above.

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