Alumno

public class Alumno
{
    private int cal1, cal2, cal3, suma;
    private double promedio;

    public Alumno()
    {
         cal1 = 0;
         cal2 = 70;
         cal3 = 0;
    }

    public Alumno(int cal1, int cal2)
    {
         this.cal1 = cal1;
         this.cal2 = cal2;
         cal3 = 0;
    }

    public void calcularPromedio()
    {
        suma = cal1 + cal2 + cal3;
        promedio = suma/3;
    }

    public void setCal1(int cal)
    {
        cal1 = cal;
    }

    public void setCal2(int cal)
    {
        cal2 = cal;
    }

    public void setCal3(int cal)
    {
        cal3 = cal;
    }

    public void setCalificaciones(int cal1, int cal2, int cal3)
    {
        this.cal1 = cal1;
        this.cal2 = cal2;
        this.cal3 = cal3;
    }

    public double getPromedio()
    {
        return promedio * 2;
    }

    public int getCal1()
    {
        return cal1;
    }
    public int getCal2()
    {
        return cal2;
    }
    public int getCal3()
    {
        return cal3;
    }


}