JavaFX PasswordField

JavaFX PasswordField is a specialized control in JavaFX that allows the user to enter a password without displaying the characters entered on the screen. This control is used to receive sensitive or important information from the user without revealing it on the screen.

Features

• The user can enter a password that is not displayed on the screen
• The password can be masked with a custom character
• The password strength can be checked and displayed
• The user can clear the password by clicking on a clear button

Usage

To use the JavaFX PasswordField, you need to create an instance of the PasswordField class and add it to your User Interface (UI).

PasswordField passwordField = new PasswordField();

Masking the Password

You can mask the password while it is entered in the PasswordField using the setPromptText() method. The value of the setPromptText() method is the character that will be used to mask the password.

passwordField.setPromptText("*");

Checking Password Strength

You can check the strength of the password by using a PasswordStrengthChecker class that implements the PasswordStrength interface. The PasswordStrengthChecker class should implement the getStrength() method to calculate the strength of the password.

public interface PasswordStrength {
    int getStrength(String password);
}

public class PasswordStrengthChecker implements PasswordStrength {
    @Override
    public int getStrength(String password) {
        // Implement password strength calculation logic here
        return strength;
    }
}

The PasswordStrengthChecker can be used to check the strength of the password in the PasswordField and display the result using a Label or Tooltip.

Clearing the Password

You can provide a clear button to the PasswordField by creating a Button and adding it to the User Interface (UI).

Button clearButton = new Button("Clear");
clearButton.setOnAction(e -> passwordField.clear());

Conclusion

The JavaFX PasswordField is a specialized control that allows users to enter passwords securely. This control offers various features like password masking, password strength checking, and password clearing that make it a powerful tool for receiving sensitive information from users.