Family Class (Constructors etc.)

public class Family
{
    String name; //surname
    int num; //number of family members
    int numStudent; //members in highSchool
    double taxesDiscount = 0;

    public Family(String name, int numStudent, int num)
    {
        this.name = name;
        this.numStudent = numStudent;
        this.num = num;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getNum()
    {
        return num;
    }

    public void setNum(int num)
    {
        this.num = num;
    }

    public int getNumStudent()
    {
        return numStudent;
    }

    public void setNumStudent(int numStudent)
    {
        this.numStudent = numStudent;
    }

    public double getTaxesDiscount()
    {
        return taxesDiscount;
    }

    public void setTaxesDiscount(double taxes)
    {
        this.taxesDiscount = taxes;
    }

    public void reduction()
    {
        if(num > 6)
        {
            taxesDiscount = taxesDiscount + 100;
        }
        for(int i = 0 ; i > numStudent ; i ++)
        {
            taxesDiscount = taxesDiscount + 40;
        }
    }

    public void addStudents()
    {
        numStudent ++;
    }

    public void addNum()
    {
        num ++;
    }

    public String toString()
    {
        return "Family [name=" + name + ", num=" + num + ", numStudent=" + numStudent + ", taxesDiscount="+ taxesDiscount + "]";
    }

}