Scanner Class
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What is the Scanner Class?
The Scanner class allows a program to read in data from the keyboard
To use a the Scanner, follow these steps
- 1. Import the Scanner
- import java.util.Scanner;
- 2. Make a new instance of the Scanner
- Scanner myScanObj = new Scanner(System.in);
- 3. Use one of the following methods to read in input
- nextInt(); - Scans an integer value
- nextDouble() – Scans a double value
- nextLine() – Scans more than one word
- next(); - Scans only one word
Example
import java.util.Scanner;
public class ScannerExample
{
public static void main (String [] args)
{
Scanner myScanObj = new Scanner(System.in);
System.out.println("Enter a sentence:");
String sentence = myScanObj.nextLine();
System.out.println("Enter an integer:");
int num1 = myScanObj.nextInt();
System.out.println("Enter a double:");
double num2 = myScanObj.nextDouble();
System.out.println("Your sentence:\n" + sentence);
System.out.println("Your Number Integer:\n" + num);
System.out.println("Your Number Integer:\t" + num);
Scanner Class
