How do I fix my code?
public class Fraction
{
   private int numerator, denominator,
numberOfFraction;
   public Fraction ()
{
   numerator = 0;
   denominator = 1;
   numberOfFraction++;
}
   public Fraction (int n, int
d)
{
   numerator = n;
   denominator = d;
   numberOfFraction++;
}
private int gcd (int num1, int num2)
{
   if (num1 == 0)
   return num2;
   return gcd (num2 % num1,
num1);
}
   public Fraction add (Fraction
third)
{
   int n = numerator * third.denominator
+ third.numerator * denominator;
   int...