Classe Data

public class Data {



    private int dia,mes,any;


    public Data() {

        dia=1;

        mes=1;

        any=2012;

    }


    public Data(int d, int m, int a) {

        dia=d;

        mes=m;

        any=a;

    }

    public boolean bixest () {return ((any%4==0 && any%40!=0) || any%100==0);}


    public int getDia() {return dia;}


    public int getMes() {return mes;}


    public int getAny() {return any;}



    public void setDia(int d) {dia=d;}



    public void setMes(int m) {mes=m;}



    public void setAny(int a) {any=a;}



    public boolean equals(Object o) {

        return o instanceof Data

        && ((Data)o).getDia() == this.dia

        && ((Data)o).getMes() == this.mes

        && ((Data)o).getAny() == this.any;

    }


    public String toString() {

        return dia + "/" + mes + "/" + any;

    }



    public Data copiar() {

        return new Data(dia,mes,any);

    }


    public boolean anteriorA(Data date) {

        return any*10000+mes*100+dia < date.any*10000+date.mes*100+date.dia;

    }


    private boolean rangDia() {


        int finalMes = 0;

        switch (mes) {

            case 1:

            case 3:

            case 5:

            case 7:

            case 8:

            case 10:

            case 12: finalMes=31; break;



            case 4:

            case 6:

            case 9:

            case 11: finalMes=30; break;



            case 2:

            if (bixest()) {finalMes=29; break;}

            else {finalMes=28; break;}

        }

        return dia>0 && dia<=finalMes;

    }



    private boolean rangMes() {return mes>0 && mes<=12;}



    public boolean dataCorrecta() {return rangDia() && rangMes();}

}