A driver class, FirstLastProg7, that demonstrates this Fraction class.

public static void main(String[] args)

{

Scanner stdIn = new Scanner(System.in);

Fraction c, d, x; // Fraction objects

System.out.println("Enter numerator; then denominator.");

c = new Fraction(stdIn.nextInt(), stdIn.nextInt()); c.print();

System.out.println("Enter numerator; then denominator.");

d = new Fraction(stdIn.nextInt(), stdIn.nextInt());

d.print();

x = new Fraction(); // a fraction for number 0

System.out.println("Sum:");

x.add(c).add(d);

x.print();

x.printAsDouble();

x = new Fraction(1, 1); // a fraction for number 1

System.out.println("Product:");

x.multiply(c).multiply(d);

x.print();

x.printAsDouble();

System.out.println("Enter numerator; then denominator.");

x = new Fraction(stdIn.nextInt(), stdIn.nextInt());

x.printAsDouble();

} // end main

A Fraction class called Fraction.java that implements these methods:

add This method receives a Fraction parameter and adds the parameter fraction to the calling object fraction.

multiply This method receives a Fraction parameter and multiplies the parameter fraction by the calling object fraction.

print This method prints the fraction using fraction notation (1/4, 21/14, etc.)

printAsDouble This method prints the fraction as a double (0.25, 1.5, etc.)

Separate accessor methods for each instance variable in the Fraction class.

Sample Output

Enter numerator; then denominator.

5

8

5/8

Enter numerator; then denominator.

4

10

4/10

Sum:

82/80

1.025

Product: 20/80

0.25

Enter numerator; then denominator.

6

0

infinity