//Visual Basic 2010 Redefinition - Overridable en Overrides Object Oriented Programming
public class Addition {
    private int m_Operand1;
    private int m_Operand2;
    public Addition(int operand1, int operand2) {
        this.Operand1 = operand1;
        this.Operand2 = operand2;
    }
    public virtual int Operand1 {
        get {
            Operand1 = this.m_Operand1;
        }
        set {
            this.m_Operand1 = value;
        }
    }
    public virtual int Operand2 {
        get {
            Operand2 = this.m_Operand2;
        }
        set {
            this.m_Operand2 = value;
        }
    }
    public virtual void GetSum() {
        GetSum = (Operand1 + Operand2);
    }
    public override void ToString() {
        ToString = ((((Operand1 + " + ") 
                    + Operand2) 
                    + " = ") 
                    + this.GetSum());
    }
}
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