Discussion :

[Shooter]

Bonjour,

J'aimerai que lorsque je saisi un text au clavier l'ecran affiche des '*'
comme pour cacher un mot de passe...

Peut on m'aider????



Merci et bon app...

[yann2]

oui,

javax.swing.JPasswordField

bon courage

[calypso]

mais encore?

[Guybrush]

http://java.sun.com/j2se/1.4.2/docs/...wordField.html

[anthony79]

Providing a Password Field

Here's the code from PasswordDemo that creates and sets up the password field.

Code :

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JPasswordField passwordField = new JPasswordField(10);
passwordField.setEchoChar('#');
passwordField.addActionListener(new ActionListener() {
    ...
});

As with text fields, the argument passed into the JPasswordField constructor indicates that the field should be 10 columns wide. By default a password field displays an asterisk '*' for each character typed. The call to setEchoChar changes it to a pound sign '#'. Finally, the code adds an action listener to the password field, which action-validates the value typed in by the user. Here's the implementation of the action listener's actionPerformed method:

Code :

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public void actionPerformed(ActionEvent e) {
    JPasswordField input = (JPasswordField)e.getSource();
    char[] password = input.getPassword();
    if (isPasswordCorrect(password)) {
	JOptionPane.showMessageDialog(f,
	    "Success! You typed the right password.");
    } else {
	JOptionPane.showMessageDialog(f,
	    "Invalid password. Try again.",
	    "Error Message",
	    JOptionPane.ERROR_MESSAGE);
    }
}

The getPassword returns a character array. Password information should not be stored or passed around in strings because strings are not secure.
A program using a password field typically validates the password before completing any actions requiring the password. This program calls a private method, isPasswordCorrect, that compares the value returned by getPassword to a value stored in a character array.



ET VOILA

[Shooter]

Merci a tous...