Java - Clase REctangulo

public static void main(String[] args) {

    int i=0;

    Rectangulo [] rec =new Rectangulo[5];

    final int num=5;

    for (i=0;i<num,;i++)

    {

        rec[i]= new Rectangulo(i+1,(i+1)*(i+2));

    }

}

class Rectangulo {

private int largo;

private int ancho;

public Rectangulo(){}

public Rectangulo(int largo, int ancho){ this.ancho=ancho;this.largo=largo;}

public int getAncho(){return this.ancho;}

public int getAlto(){return this.alto;}

public void setAncho(int ancho){this.ancho=ancho;}

public void setAlto(int alto){this.alto=alto;}

}