Function overloading

class exam

{

        private int m1,m2,total;

        public void setmarks(int ma1,int ma2)

        {

                m1 = ma1;

                m2 = ma2;     

        }

        public void setmarks()

        {

                m1 = 80;

                m2 = 100;

        }

        void calculate()

        {

                total = m1 + m2;

        }

        void disp()

        {

                System.out.println("Mark1 : " + m1 + "\t Mark2 " + m2 + "\t Total " + total);

        }

        public static void main(String args[])

        {

                exam e1 = new exam();

                exam e2 = new exam();

                e1.setmarks();

                e2.setmarks(70,80);

                e1.calculate();

                e2.calculate();

                e1.disp();

                e2.disp();

        }

}