java fractions

I fixed the errors..etc the program compiles and run
but I am not getting the correct out put. It looks like it is not combining the two fractions together
because the output only show.. the first number enter for the fraction 1

I under stand that the user enters in (num1 and den1) those get stored at
Rational rational1 = new Rational( num1, den1)
and (num2 and den2) get stored as rational2 so the math function between the two fractions can happen
and the result = rational1

but that doesn't seem to be happening I am not sure where at?

import java.util.Scanner;
public class RationalTest
{
    public static void main (String args [])
    {
        int num1 = 0;
        int den1 = 0;
        int num2 = 0;
        int den2 = 0;
        //        double num1 = 0;
        //        double den1 = 0;
        //        double num2 = 0;
        //        double den2 = 0;
        int choice;
        int dec;
        // Rational foo = new Rational();

        // ask user to enter the values for the fractions
        Scanner input = new Scanner (System.in);

        System.out.print("This program will do basic math with fractions\n");

        //  do{
        System.out.print("please enter the numaortor for the first fraction\n");
        num1 = input.nextInt();

        System.out.print("Please enter the denominator for the frist fraction\n");
        den1 = input.nextInt();
        Rational rational1 = new Rational( num1, den1);
        // takes num1 and num2 to create a rational

        System.out.print("Please enter the numeraotor for the second fraction\n");
        num2 = input.nextInt();

        System.out.print("Please enter the denominator for the second fraction\n");
        den2 = input.nextInt();

        Rational rational2 = new Rational (num2, den2);
        // takes num2 and num2 to creat a rational2

        System.out.print ("please enter the precision\n");
        dec = input.nextInt();

       // Rational rational2 = new  Rational ( num2,  den2);

        System.out.println("Choose what function you want the fractations to do?\n");
        System.out.println("1 add fractions\n");
        System.out.println("2 subtract fractions\n");
        System.out.println("3 divide fractions\n");
        System.out.println("4 muliply fractions\n");
        System.out.println("0 end the program \n");
        choice = input.nextInt();
        Rational result;
        switch( choice)
        {
            case 1:
                result = rational1.getaddfract(rational2);
                break;

            case 2:


                result = rational1.getsubfract(rational2);
                break;

            case 3:
                result = rational1.gettimesfract(rational2);
                break;

            case 4:
                result = rational1.getdividedfract(rational2);
                break;

            case 0:
                System.out.print("Thank you for using this program");
                break;
        }
        System.out.println("Result: " + rational1.toString());
        System.out.println("Result: " + rational1.toString( dec));
        //   }
        //            while (choice !=0);

    }
}
********* second part of the program
import java.text.DecimalFormat;
public class Rational

{
    int numerator; //1
    int denominator; //4
    public Rational(int n, int d)
    {
       this. numerator = n;
       this.denominator = d;
    }

    public Rational  getaddfract (Rational r)
    {
        int num = (numerator * r.denominator)+(r.numerator * denominator);
        // r. = rational from second rational
        int den = (denominator*r.denominator);
        Rational result = new Rational(num, den);
        return result;



    } // end add method
    public  Rational getsubfract( Rational r)
    {
        int num = (numerator * r.denominator)+(r.numerator * denominator);
        int den = (denominator * r.denominator);
        Rational result = new Rational(num,den);
        return result;
    } // end sutraction method

    public Rational gettimesfract (Rational r)
    {
        int num = ( numerator * r.numerator);
        int den = ( denominator * r.denominator);
        Rational result = new Rational (num,den);
        return result;

    } // end times method
    public  Rational getdividedfract (Rational r)
    {

        int num = (numerator / r.denominator);
        int den = (denominator / r.numerator);
        Rational result = new Rational (num,den);
        return result;
    }// end divide method


    public String toString()
    {
        return numerator+"/"+denominator+"\n";
    }

    public String toString(int dec)
    {
        DecimalFormat df = new DecimalFormat();
        df.setMaximumFractionDigits( dec);
        df.setMinimumFractionDigits( dec);
        return df.format(((int)numerator)/((int)denominator));
    }

}