public FenPrincipale() {
        initComponents();
        
        this.nomAnimal = "Aucun animal";
        this.positions = new ArrayList();
        this.positionsAff = new ArrayList();
        
        nbrPointsAff = sliderNbrPoints.getValue()+1;
        nbrPointsAffiche = Integer.toString(nbrPointsAff);
        choixNbPtsLabel2.setText(nbrPointsAffiche);
        
        initParam();
        initBoutons();
        
        initFolder();
        lireDonnees( false );
    }