Ok, in my last post I had mensioned that I would add more methods. I added a subtract method that would subtract two fractions. I get an error when running the program with J2SDK. When I run the program with Eclipse, it runs fine, except for the error that it mensions after it has finished running. Here is my Fraction class. public class Fraction { int numerator; // Holds numerator int denominator; // Holds denominator // Constructor passes int values from num and denum to numerator, and denominator. public Fraction(int num, int denom) { numerator = num; denominator = denom; } // Default constructor sets data fields to 0 public Fraction() { numerator = 0; denominator = 0; } // Methods return values of numerator and denominator public int getNumerator() { return numerator; } public int getDenominator() { return denominator; } // Method returns printed formatted string public String toString() { return numerator + "/" + denominator; } // Method adds two fractions together public Fraction add(Fraction frac1) { Fraction fraction_1 = new Fraction(); Fraction fraction_2 = new Fraction(); Fraction result = new Fraction(); Fraction printResult = new Fraction(); fraction_1.denominator = denominator * frac1.denominator; fraction_1.numerator = numerator * frac1.denominator; fraction_2.denominator = frac1.denominator * denominator; fraction_2.numerator = frac1.numerator * denominator; result.numerator = fraction_1.numerator + fraction_2.numerator; result.denominator = denominator * frac1.denominator; printResult = new Fraction(result.numerator, result.denominator); return printResult; } // Method subtracts two fractions public Fraction subtract(Fraction frac1) { Fraction fraction_1 = new Fraction(); Fraction fraction_2 = new Fraction(); Fraction result = new Fraction(); Fraction printResult = new Fraction(); fraction_1.denominator = denominator * frac1.denominator; fraction_1.numerator = numerator * frac1.denominator; fraction_2.denominator = frac1.denominator * denominator; fraction_2.numerator = frac1.numerator * denominator; result.numerator = fraction_1.numerator - fraction_2.numerator; result.denominator = denominator * frac1.denominator; // If both numerator and denominator are negative if (result.numerator < 0 && result.denominator < 0) { printResult = new Fraction(Math.abs(result.numerator), Math.abs(result.denominator)); return printResult; } if (result.numerator > 0 && result.denominator < 0) { printResult = new Fraction(result.numerator*-1, Math.abs(result.denominator)); return printResult; } } } // End of class Here is my source code for the driver class. import java.util.Scanner; // Import Scanner class // Class FractionDriver inputs two fractions and adds and subtracts them public class FractionDriver { public static void main(String[] args) { // Declare local data fields int numerator; // Holds numerator int denominator; // Holds denominator Scanner inData = new Scanner(System.in); // Scanner object Fraction frac1 = new Fraction(); Fraction frac2 = new Fraction(); Fraction answer = new Fraction(); // Ask user for numerators and denominators. System.out.println("Enter numerator for fraction 1:"); numerator = inData.nextInt(); System.out.println("Enter denominator for fraction 1:"); denominator = inData.nextInt(); frac1 = new Fraction(numerator, denominator); System.out.println("Fraction 1 is " + frac1 + "."); System.out.println("Enter numerator for fraction 2:"); numerator = inData.nextInt(); System.out.println("Enter denominator for fraction 2:"); denominator = inData.nextInt(); frac2 = new Fraction(numerator, denominator); System.out.println("Fraction 2 is " + frac2 + "."); answer = frac1.add(frac2); System.out.println(frac1 + " + " + frac2 + " = " + answer); answer = frac2.subtract(frac1); System.out.println(frac2 + " - " + frac1 + " = " + answer); } } When I run the program with Eclipse, this is what I get. Enter numerator for fraction 1: 2 Enter denominator for fraction 1: 5 Fraction 1 is 2/5. Enter numerator for fraction 2: 3 Enter denominator for fraction 2: 7 Fraction 2 is 3/7. 2/5 + 3/7 = 29/35 Exception in thread "main" java.lang.Error: Unresolved compilation problem: This method must return a result of type Fraction at Fraction.subtract(Fraction.java:49) at FractionDriver.main(FractionDriver.java:33) When I run the program with J2SDK, I get the following. C:\Users\user\Desktop\COMP268\Practice\Fractions\src>javac *.java Fraction.java:74: missing return statement } ^ 1 error C:\Users\user\Desktop\COMP268\Practice\Fractions\src> What am I doing wrong? Gilbert Neiva