![catch(ArithmeticException e)
{
System.out.println("infinity");
}
catch(Exception e)
{
System.out.println(e);
}
}
//add two fractions
public Fraction add(Fraction param)
{
int tnum=(this.num *param.den)+(this.den*param.num);
int tden=this.den*param.den;
this.num=tnum;
this.den=tden;
return this;
}
//multiply two fractions
public Fraction multiply(Fraction param)
{
int tnum=(this.num *param.num);
int tden=this.den*param.den;
this.num=tnum;
this.den=tden;
return this;
}
}
public static void main(String[] args)
{
Scanner stdIn = new Scanner(System.in);
Fraction c, d, x; // Fraction objects](https://image.slidesharecdn.com/javaprogrampublicclassfractioninstancevariablesin-230704015255-cd097e1f/85/Java-Programpublic-class-Fraction-instance-variablesin-pdf-2-320.jpg)
![int tnum=(this.num *param.num);
int tden=this.den*param.den;
this.num=tnum;
this.den=tden;
// simplify fraction
int hcf = gcd(num,den);
num = num/hcf;
den = den/hcf;
return this;
}
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(); // create a fraction for number 0
System.out.println("Sum:");
x.add(c).add(d);
x.print();
x.printAsDouble();
x = new Fraction(1, 1); // create 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
}](https://image.slidesharecdn.com/javaprogrampublicclassfractioninstancevariablesin-230704015255-cd097e1f/85/Java-Programpublic-class-Fraction-instance-variablesin-pdf-6-320.jpg)
Java Programpublic class Fraction { instance variablesin.pdf
- 1. Java Program public class Fraction { //instance variables int num; int den; //default construtcor Fraction() { num=0; den=1; } //parametrized constructor Fraction(int n,int d) { num=n; den=d; } //print fraction object public void print() { System.out.println(num+"/"+den); } //return double value of fraction public void printAsDouble() { try { double div=(double)num/(double)den; System.out.println(div); }
- 2. catch(ArithmeticException e) { System.out.println("infinity"); } catch(Exception e) { System.out.println(e); } } //add two fractions public Fraction add(Fraction param) { int tnum=(this.num *param.den)+(this.den*param.num); int tden=this.den*param.den; this.num=tnum; this.den=tden; return this; } //multiply two fractions public Fraction multiply(Fraction param) { int tnum=(this.num *param.num); int tden=this.den*param.den; this.num=tnum; this.den=tden; return this; } } public static void main(String[] args) { Scanner stdIn = new Scanner(System.in); Fraction c, d, x; // Fraction objects
- 3. 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(); // create a fraction for number 0 System.out.println("Sum:"); x.add(c).add(d); x.print(); x.printAsDouble(); x = new Fraction(1, 1); // create 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 Modify the code so that it can handle negative numerators and negative denominators, and provide a helping method that performs fraction reduction. Sample session using negative numbers and reduction Enter numerator, then denominator. -5 -8 5/8 Enter numerator, then denominator. 4 -10 2/5 Sum: 9/40 0.225 Product: 0.25 Enter numerator, then denominator. 0 -0 indeterminate Solution //Fraction.java import java.util.Scanner; public class Fraction { //instance variables int num; int den; //default construtcor Fraction()
- 4. { num=0; den=1; } // greatest common divisor to reduce fraction int gcd(int n1, int n2) { if (n2 != 0) return gcd(n2, n1 % n2); else return n1; } //parametrized constructor Fraction(int n,int d) { num=n; den=d; if(d == 0) { System.out.println("indeterminate"); System.exit(1); } int hcf = gcd(num,den); num = num/hcf; den = den/hcf; } //print fraction object public void print() { if( (num < 0 && den > 0)) System.out.println(num+"/"+den); else if((num > 0 && den < 0)) System.out.println("-" + num+"/"+ (-1*den)); else if(num < 0 && den < 0) System.out.println( (-1*num)+"/"+ (-1*den));
- 5. else System.out.println(num+"/"+den); } //return double value of fraction public void printAsDouble() { try { double div=(double)num/(double)den; System.out.println(div); } catch(ArithmeticException e) { System.out.println("infinity"); } catch(Exception e) { System.out.println(e); } } //add two fractions public Fraction add(Fraction param) { int tnum=(this.num *param.den)+(this.den*param.num); int tden=this.den*param.den; this.num=tnum; this.den=tden; // simplify fraction int hcf = gcd(num,den); num = num/hcf; den = den/hcf; return this; } //multiply two fractions public Fraction multiply(Fraction param) {
- 6. int tnum=(this.num *param.num); int tden=this.den*param.den; this.num=tnum; this.den=tden; // simplify fraction int hcf = gcd(num,den); num = num/hcf; den = den/hcf; return this; } 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(); // create a fraction for number 0 System.out.println("Sum:"); x.add(c).add(d); x.print(); x.printAsDouble(); x = new Fraction(1, 1); // create 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 }
- 7. /* output: Enter numerator; then denominator. -5 -8 5/8 Enter numerator; then denominator. 4 -10 -2/5 Sum: 9/40 0.225 Product: -1/4 -0.25 Enter numerator; then denominator. 0 -0 indeterminate */