Numeric Input

import java.util.Scanner;
class AddTwo
{
  public static void main ( String[] args ) 
  {
    int numberA, numberB;
    Scanner scan = new Scanner( System.in );

    System.out.print("Enter first number: ");
    numberA = scan.nextInt();

    System.out.print("Enter second number: ");
    numberB = scan.nextInt();

    System.out.println( "Sum: " + (numberA + numberB) );
  }
}

This example program is written to do numeric input from the keyboard, and can be used with input redirection. Here it adds up two integers entered by the user:

C:\temp>java AddTwo
Enter first number: 12
Enter second number: 7
Sum: 19

The program reads the characters like "12" that the user enters and converts them into the int data type using:

scan.nextInt()

This method reads the input stream only far enough to gather characters for the next integer. It will stop in the middle of a line after it has finished reading one integer. The next time it is called it will continue from where it left off.

Answer:

Numeric Input

QUESTION 8: