FileChainee.java

package td3;

import td3interfaces.*;

public class FileChainee implements File {

    public int nbElems = 0;
    public Cellule first;

    public FileChainee() {
        first = new Cellule(null, null);
    }

    @Override
    public void ajoutQueue(Object obj) {
        Cellule c = new Cellule(obj, first);
        first = c;
        nbElems++;
    }

    @Override
    public Object suppressionTete() {
        Cellule nextCellToCheck = first;
        for (int i = 0; i < nbElems - 1; i++) {
            nextCellToCheck = nextCellToCheck.getNextCell();
        }
        Object oldObj = nextCellToCheck.getObj();
        nextCellToCheck.setNextCell(null);
        nbElems--;
        return oldObj;
    }

    @Override
    public boolean estVide() {
        if (nbElems == 0)
            return true;
        else
            return false;
    }

    @Override
    public int taille() {
        return nbElems;
    }

    @Override
    public String toString() {
        Cellule nextCellToString = first;
        String str = "FileChainee de " + this.nbElems + " éléments : " + "\n";
        for (int i = 0; i < nbElems; i++) {
            nextCellToString = nextCellToString.getNextCell();
            if (i == 0)
                str += "Cellule de départ de la file : ";
            else
                str += "Cellule " + i + " : ";

            str += nextCellToString.toString() + ", " + "\n";
        }
        return str;
    }

}