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4 examples of PasswordField in JavaFX | Free for beginners

September 15, 2022 - Updated on November 2, 2022
in Java
Reading Time: 3 mins read
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JavaFX PasswordField
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Contents

  • How to use the PasswordField in JavaFX Tutorial
  • JavaFX PasswordField Examples
    • Create the PasswordField
    • Show the PasswordField to the Scene Graph
      • Output
    • SetText() and GetText() methods
      • Output
    • How to show Password in JavaFX PasswordField
      • Output
  • YouTube Video

How to use the PasswordField in JavaFX Tutorial

The passwordfield in JavaFX works the same as the JavaFX TextField, JavaFX PasswordField, and JavaFX TextArea. This type of text input control is like the TextField except it masks its text, meaning you cannot see the actual entered characters in the password field. Otherwise, it displays a bulleted character.

In this tutorial, I will walk you through how to use the password field in JavaFX. The password field is very easy to use and only used for entering passwords because it is only designed for passwords. This tutorial consists of creating the password field, setting the text, and getting the entered password from the password field. And I will also show you how to show the entered password.

Showing the entered password in JavaFX is a bit different, unlike Java Swing. It can easily use the setEchoChar() method to show the password easily. My idea of showing the entered password in JavaFX is a bit complex. Although, there are a lot of ways or methods to show the entered password in JavaFX.

JavaFX PasswordField Examples

The following examples below will teach you how to use the JavaFX PasswordField. Let’s start with creating the password field. The PasswordField only provides one constructor, which is a no-args constructor, meaning no parameters are allowed in the PasswordField’s constructor.

Create the PasswordField

It is easy to create the password field, you can also use the Scene Builder to create your graphical user interface easily. Otherwise, code it manually and the example code below will show you how to create the password field.

// create the PasswordField
PasswordField passwordField = new PasswordField();

Show the PasswordField to the Scene Graph

If you don’t use the Scene Builder to make your GUI, you also need to know how to add the node to the scene with the layout in JavaFX. The code below will teach you how to add the password field node to the Scene Graph.

PasswordField passwordField = new PasswordField();
StackPane layout = new StackPane(passwordField);
Scene scene = new Scene(layout, 400, 400);
stage.setScene(scene);
stage.show();

Output

PasswordField in JavaFX

SetText() and GetText() methods

These are the most important methods used in JavaFX PasswordField. The setText() method is used to set a text to the PasswordField and the getText() method is used to get the entered characters from the PasswordField in JavaFX. The code below will show you how to use these methods.

// set text
PasswordField passwordField = new PasswordField();
passwordField.setText("samplepassword");

// get text
System.out.println(passwordField.getText());

Output

JavaFX PasswordField

How to show Password in JavaFX PasswordField

To show the entered password in PasswordField is somewhat easy and complex. My idea of showing the password in JavaFX is a little complex but easy. Showing the password in JavaFX is different from Java Swing. Java Swing uses the setEchoChar() method as I mentioned above. The following example code below will teach you how to show the entered password in JavaFX.

import javafx.beans.binding.Bindings;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.ToggleButton;
import javafx.scene.input.KeyEvent;

import java.net.URL;
import java.util.ResourceBundle;

public class PasswordFieldController implements Initializable {

    @FXML
    private PasswordField passwordField;

    @FXML
    private Label shownPassword;

    @FXML
    private ToggleButton toggleButton;

    @FXML
    void passwordFieldKeyTyped(KeyEvent event) {
        shownPassword.textProperty().bind(Bindings.concat(passwordField.getText()));
    }

    @FXML
    void toggleButton(ActionEvent event) {
        if (toggleButton.isSelected()) {
            shownPassword.setVisible(true);
            shownPassword.textProperty().bind(Bindings.concat(passwordField.getText()));
            toggleButton.setText("Hide");
        }else{
            shownPassword.setVisible(false);
            toggleButton.setText("Show");
        }
    }

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
        shownPassword.setVisible(false);
    }
}

Output

Show password in JavaFX PasswordField

YouTube Video

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6 JavaFX Text Field Examples Perfect for Beginners

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6 examples of Text Area in JavaFX | Perfect for beginners

KENSOFT

KENSOFT

What’s up! Kent is my name. The name KENSOFT is derived from the words Kent and Software. My programming language of choice is Java

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