/**
* Stores Numerator and Denominator For a Fraction3.
* Has Methods: constructor, toString(), set(), get().
*
* @author William McDaniel Albritton
*/
public class Fraction3{
   
   //These Are The Data Fields.
   //Used to STore EACH Object's Data.
   //Syntax: private ClassName variableName;	 
   private Integer numerator;
   private Integer denominator;
   
   /** 
   * Constructor - Used To Create EAch Object and Initialize DAta Fields.
   * 
   * @param numeratorParameter is the Fraction's Numerator.	 
   * @param denominatorParameter is the Fraction's Denominator. 
   */   
   public Fraction3(Integer numeratorParameter, Integer denominatorParameter){
       //This Code Initializes The Data Fields.
       //Syntax: dataField = parameter;
      numerator = numeratorParameter;
      denominator = denominatorParameter;
   }
 
   /**
   * This Adds Two Fractions Together.
   *
   * @param fraction2 Is The 2nd Fraction.
   * @return a 3rd Fraction as The Result 
   */
   public Fraction3 add (Fraction3 fraction2){
      //Get the Numbertor and Denominator Of fraction2.
      Integer numerator2 = fraction2.getNumerator();
      Integer denominator2 = fraction2.getDenominator();
      //Cross Multiply and Add to Get Numerator.   
      Integer numerator3 = numerator * denominator2 + numerator2 * denominator;
      //Multiply Both denominators.   
      Integer denominator3 = denominator * denominator2;
      //Create (instantiate) new Fraction and Return it.   
      Fraction3 result = new Fraction3(numerator3, denominator3); 
      return result;
   }
      
   /**
   * This Subtracts Two Fractions
   *
   * @param fraction2 Is The 2nd Fraction.
   * @return a 3rd Fraction as The Result 
   */
   public Fraction3 subtract (Fraction3 fraction2){
      //Get the Numbertor and Denominator Of fraction2.
      Integer numerator2 = fraction2.getNumerator();
      Integer denominator2 = fraction2.getDenominator();
      //Cross Multiply and Subtract to Get Numerator.   
      Integer numerator3 = numerator * denominator2 - numerator2 * denominator;
      //Multiply Both denominators.   
      Integer denominator3 = denominator * denominator2;
      //Create (instantiate) new Fraction and Return it.   
      Fraction3 result = new Fraction3(numerator3, denominator3); 
      return result;
   } 

   
   /**
   * Used to Display The Data Stored In EAch Object's DAta Field.
   *
   * @return a Fraction in format: numerator / denominator 
   */
   public String toString(){
      //Create a Local VAriable.
      String fractionString = new String("da fraction");
      //create a string in the format: "n / d"
      fractionString = numerator + " / " + denominator;
      //Return the Local Variable.
      return fractionString;
   }

   /**
   * This Is An "Accessor" Method - Used To Get A Data Field.
   *
   * @return the numerator 
   */
   public Integer getNumerator(){
      //Return the Data Field.
      return numerator;
   }		
   	
   /**
   * This Is An "Accessor" Method - Used To Get A Data Field.
   *
   * @return the denominator 
   */
   public Integer getDenominator(){
      //Return the Data Field.
      return denominator;
   }				
   	
   /**
   * This Is A "Mutator" Method - Used To Set A Data Field.
   *
   * @param numeratorParameter is the numerator. 
   */
   public void setNumerator(Integer numeratorParameter){
      //SEt the Data Field.
      numerator = numeratorParameter;
   }						
   
   /**
   * This Is A "Mutator" Method - Used To Set A Data Field.
   *
   * @param denominatorParameter is the denominator. 
   */
   public void setDenominator(Integer denominatorParameter){
      //set the Data Field.
      denominator = denominatorParameter;
   }
     
}//End of Class.