import InterfaceFila;

public class Fila implements InterfaceFila {

ListaLigada list = new ListaLigada();

@Override

public void enqueue(Object elemento) {

// TODO Auto-generated method stub

list.adicionaFim(elemento);

}

@Override

public void dequeue() {

// TODO Auto-generated method stub

list.removeInicio();

}

@Override

public Object peek() {

// TODO Auto-generated method stub

return (Object)list.pega(0);

}

@Override

public Object peekAndDequeue() {

// TODO Auto-generated method stub

Object elemento=peek();

dequeue();

return elemento;

}

@Override

public boolean isEmpty() {

// TODO Auto-generated method stub

return list.eVazia();

}

@Override

public int size() {

// TODO Auto-generated method stub

return list.tamanho();

}

}