HANDLING EXCEPTIONS AND EVENTS - Java Programming: From Problem Analysis to Program Design - page 726

On some systems, you may get the following output for Sample Run 3:
Line 2: Enter the dividend: 2e
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:819)
at java.util.Scanner.next(Scanner.java:1431)
at java.util.Scanner.nextInt(Scanner.java:2040)
at java.util.Scanner.nextInt(Scanner.java:2000)
at ExceptionExample1.main(ExceptionExample1.java:14)

Next, consider Example 11-2. This is the same program as in Example 11-1, except that
in Line 8, using an if statement, a common programming practice, the program checks
whether divisor is zero. (Later in this chapter we will explain how to use Java's
mechanism to handle an InputMismatchException .)

EXAMPLE 11-2

import java.util.*;

public class ExceptionExample2
{

static Scanner console = new Scanner(System.in);

public static void main(String[] args)
{

int dividend, divisor, quotient; //Line 1

System.out.print("Line 2: Enter the "
+ "dividend: "); //Line 2

dividend = console.nextInt(); //Line 3

System.out.println(); //Line 4

System.out.print("Line 5: Enter the "
+ "divisor: ");

//Line 5

divisor = console.nextInt(); //Line 6

System.out.println(); //Line 7

if (divisor != 0) //Line 8

{

quotient = dividend / divisor; //Line 9

System.out.println("Line 10: "
+ "Quotient = "
+ quotient);

//Line 10

}
else

System.out.println("Line 11: Cannot "
+ "divide by zero."); //Line 11

}

}