java.io.EOFException
        at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2601)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1319)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
	at Principal.importarProductos(Principal.java:101)
	at Principal.main(Principal.java:26)
 

private static void importarProductos(){	
		ArrayList<Producto> arrayAuxiliar = new ArrayList<Producto>();
		ObjectInputStream ois = null;
		Object aux = null;
		try {
			ois = new ObjectInputStream(new FileInputStream("./estanteria.obj"));	
 
			aux = ois.readObject();          
 
			while (aux!=null)
			{
			    if (aux instanceof Producto)
			        System.out.println(aux); 
			    aux = ois.readObject();
			}
 
 
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			System.out.println("es del fichero");
		} catch (IOException e) {
			e.printStackTrace();
			System.out.println("es IO");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
			System.out.println("de la clase si que no");
		}finally{
			try{
				ois.close();
			}catch(IOException f){}			
		}		
 
	}
 

private static void exportaProductos(ArrayList p){
		ObjectOutputStream fichero = null;
		try {
			fichero = new ObjectOutputStream(new FileOutputStream("./estanteria.obj"));
			for(int x = 0; x<p.size(); x++){
				fichero.writeObject(p.get(x));
			}			
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try{
				fichero.close();
			}catch(IOException f){}
 
		}		
	}