IT08 Scanner Class Quiz

What class is used to get the user input?

In what package does the Scanner belong?

What is the use of the Scanner class?

Match the methods of Scanner with their functionalities:

What is the syntax to import the Scanner?

What is the syntax to declare a Scanner?

What is the syntax to read input from the user?

What does 'scr' stand for?

What is the safest way to read input as a string?

What is the syntax to read INTEGER input from the user?

Scanner Class Overview

The Scanner Class is utilized for obtaining user input in Java programming.
It is part of the java.util package, which contains utility classes for collections, date and time functions, etc.

Usage of Scanner Class

To use Scanner, an object can be created using its constructors and methods for various input types.
Important methods in Scanner include:
- nextLine(): Reads an entire line of text.
- nextInt(): Reads the next integer value.
- nextFloat(): Reads the next float value.
- nextDouble(): Reads the next double value.

Importing and Declaring Scanner

Import the Scanner class with the syntax: import java.util.Scanner;
Declare a Scanner object with the syntax: Scanner scr = new Scanner(System.in);

Reading User Input

To read a string input from the user, use: stringname = scr.nextLine();
For reading an integer input, the syntax is: varname = scr.nextInt();

Additional Notes

The variable scr commonly represents an instance of the Scanner class.
Using nextLine() is the safest method for reading input as a string, ensuring the entire line is captured without errors.

Test your knowledge on the Scanner class in Java with this quiz. It covers the usage, methods, and package details essential for user input handling. Perfect for beginners looking to reinforce their understanding of Java.