public static void setGravar(){
        //ABRIR ARQUIVO PARA GRAVAÇÃO
        try {
            outputContaC = new ObjectOutputStream(new FileOutputStream("inputContaC.ser", false));
            outputContaP = new ObjectOutputStream(new FileOutputStream("inputContaP.ser", false));
            outputTransC = new ObjectOutputStream(new FileOutputStream("inputTransC.ser", false));
            outputTransP = new ObjectOutputStream(new FileOutputStream("inputTransP.ser", false));

        } catch (IOException ex) {
            JOptionPane.showMessageDialog(null, "FALHA NA ABERTURA DO ARQUIVO PARA GRAVAÇÃO", "SAÍDA", JOptionPane.ERROR_MESSAGE);
            System.exit(1);
        }
    }