Program to Demonstrates- Returning an Object

/* Program to Demonstrates- Returning an Object */

class Rational
{
    int numerator;
    int denominator;

    Rational(int a, int b)
    {
        numerator = a;
        denominator = b;
    }

    Rational()
    {
        numerator = 0;
        denominator = 0;
    }

    // Function accepting object argument & returning object
    Rational sum(Rational n)
    {                                       
        Rational Tobject = new Rational();
        int temp = 0;
        temp += numerator * n.denominator;
        temp += denominator * n.numerator;
        Tobject.numerator = temp;
        Tobject.denominator = denominator * n.denominator;
        return Tobject;
    }

    void display()
    {
        System.out.print( numerator+"/"+denominator);       
    }

}

class ReturnObject
{
    public static void main(String args[])
    {
        Rational r1 = new Rational(2,5);
        Rational r2 = new Rational(3,7);
        Rational r3 = new Rational();
       
        r3 = r1.sum(r2);    // Objects passed as arguments & return type of called function is object

        r1.display();
        System.out.print(" + ");
        r2.display();
        System.out.print(" = ");
        r3.display();
    }
}