Java Reference
In-Depth Information
Display 2.6
Keyboard Input Demonstration
1
import
java.util.Scanner;
Makes the
Scanner
class available to
your program.
2
public class
ScannerDemo
3{
4
public static void
main(String[] args)
5
Creates an object of the class
Scanner
and names the
object
keyboard
.
{
6
Scanner keyboard =
new
Scanner(System.in);
7
System.out.println("Enter the number of pods followed by");
8
System.out.println("the number of peas in a pod:");
9
int
numberOfPods = keyboard.nextInt();
Each reads one
int
from the keyboard
10
int
peasPerPod = keyboard.nextInt();
11
int
totalNumberOfPeas = numberOfPods*peasPerPod;
12
System.out.print(numberOfPods + " pods and ");
13
System.out.println(peasPerPod + " peas per pod.");
14
System.out.println("The total number of peas = "
15
+ totalNumberOfPeas);
16
}
17
}
Sample Dialogue
1
The numbers that
are input must be
separated by
whitespace, such as
one or more blanks.
Enter the number of pods followed by
the number of peas in a pod:
22 10
22 pods and 10 peas per pod.
The total number of peas = 220
Sample Dialogue
2
Enter the number of pods followed by
the number of peas in a pod:
22
10
22 pods and 10 peas per pod.
The total number of peas = 220
A line break is also
considered whitespace and
can be used to separate the
numbers typed in at the
keyboard.
