public class DoDivision
1: //DoDivision.java
2:
3: import java.util.Scanner;
4:
5: public class DoDivision
6: {
7: private int numerator;
8: private int denominator;
9: private double quotient;
10:
11: public static void main(String[] args)
12: {
13: DoDivision doIt = new DoDivision();
14:
15: try
16: {
17: doIt.doNormalCase();
18: }
19: catch (DivideByZeroException e)
20: {
21: System.out.println(e.getMessage());
22: doIt.giveSecondChance();
23: }
24:
25: System.out.println("End of Program.");
26: }
27:
28: public void doNormalCase()
29: throws DivideByZeroException
30: {
31: System.out.println("Enter numerator:");
32: Scanner keyboard = new Scanner(System.in);
33: numerator = keyboard.nextInt();
34:
35: System.out.println("Enter denominator:");
36: denominator = keyboard.nextInt();
37: if (denominator == 0)
38: throw new DivideByZeroException();
39: quotient = numerator / (double)denominator;
40: System.out.println(numerator + "/" + denominator + " = " + quotient);
41: }
42:
43: public void giveSecondChance()
44: {
45: System.out.println("Try Again:");
46: System.out.println("Enter numerator:");
47: Scanner keyboard = new Scanner(System.in);
48:
49: numerator = keyboard.nextInt();
50: System.out.println("Enter denominator:");
51: System.out.println("Be sure the denominator is not zero.");
52: denominator = keyboard.nextInt();
53:
54: if (denominator == 0)
55: {
56: System.out.println("I cannot do division by zero.");
57: System.out.println("Since I cannot do what you want,");
58: System.out.println("the program will now end.");
59: System.exit(0);
60: }
61:
62: quotient = ((double)numerator) / denominator;
63: System.out.println(numerator + "/" + denominator + " = " + quotient);
64: }
65: }