public void carrega(String arq) {
		try {
			ObjectInputStream is = new ObjectInputStream(new FileInputStream(arq));
			contaRaiz = (ContaComposite) is.readObject();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} 
		contaSelec = contaRaiz;
		contaDe = contaRaiz;
		contaPara = contaRaiz;
		
	}