Java Change Text by asterisks in JOptionPane

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Java Change Text by asterisks in JOptionPane

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#1 by (1 votes)

0

Good day.

I have the following code that asks for a password but I want them to be seen in asterisks instead of what I write.

@FXML
public void pedirPass() {
    String pass = "root";
    String dialogpass;
    try {
        dialogpass = JOptionPane.showInputDialog("Contraseña Administrador:");

        if (dialogpass.isEmpty()) {
            Alert alert = new Alert(AlertType.WARNING);
            alert.setTitle("Pass");
            alert.setHeaderText("Error");
            alert.setContentText("No has escrito nada!");

            alert.showAndWait();
        } else if (dialogpass.equals(pass)) {
            System.out.println("Entraste");

        } else {
            dialogpass = JOptionPane.showInputDialog(null, "Escriba nuevamente la contraseña", "Error!", JOptionPane.ERROR_MESSAGE);
            if (dialogpass.equals(pass)) {
                txt_KmIni.setDisable(false);
            } else {
                Alert alert = new Alert(AlertType.WARNING);
                alert.setTitle("Control Vehicular");
                alert.setHeaderText("ATENCION, Consulte con el Administrador");
                alert.setContentText("Vulva a intentarlo con la contraseña correcta!");

                alert.showAndWait();
            }
        }

    } catch (Exception e) {

    }
}

java javafx

asked by Riddick 17.11.2017 в 18:02

source

1 answer

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score 1 · Accepted Answer

Hello Riddick!
The showInputDialog () method of the JOptionPane class allows you to create dialogs for data entry easily, however, to do what you want is to necessary to create a customizable dialog, you could easily do so by adding a JPasswordField instead of the text string and then getting the array of entered characters to proceed with the password check.

To get the characters written in JPasswordField , you can use:

new String(contraseña.getPassword());

For example:

JPasswordField contraseña = new JPasswordField();
if(JOptionPane.showConfirmDialog(null, contraseña, "Ingrese contraseña", JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION){
    dialogpass = new String(contraseña.getPassword());
    // Haces la comprobación de la contraseña
}