Fraction Runner

import java.util.Scanner;

public class FractionRunner
{
  public static void main (String[] args)
  {
      Scanner reader = new Scanner (System.in);
      Fraction f1 = new Fraction();
      Fraction f2 = new Fraction();
      String input = "";
      boolean n = true;
      /**
       * input for f1 (fraction one)
       */
      while(n){
      System.out.println("*Basic Fraction Calculator*");
      System.out.println("***************************");
      System.out.println("CHOOSE ONE OF THE FOLLOWING CHOICES");
      System.out.println("a) Choose to add");
      System.out.println("b) Choose to convert a fraction into decimal");
      input = reader.next();
      input.toLowerCase();

      if(input.equals("a"))
      {
      System.out.print("Give me a numerator: ");
      int x = reader.nextInt();
      f1.setNumerator(x);

      System.out.print("Give me a denominator: ");
      int y = reader.nextInt();
      f1.setDenominator(y);
      /**
       * input for f2 (fraction 2)
       */
      System.out.print("Give me a numerator: ");
      int z = reader.nextInt();
      f2.setNumerator(z);

      System.out.print("Give me a denominator: ");
      int q = reader.nextInt();
      f2.setDenominator(q);
      System.out.println(f1.add(f1, f2).toString());
      }

      else if(input.equals("b"));
      {
      System.out.print("Give me a numerator: ");
      int x = reader.nextInt();
      f1.setNumerator(x);

      System.out.print("Give me a denominator: ");
      int y = reader.nextInt();
      f1.setDenominator(y);

      System.out.println(f1.toDecimal());
       }

    System.out.println("Would you like to continue? y/n");
    input = reader.next();
    if (input.equals("n"))
    {
        n=false;
    }
}
}
}