CODEWITHSUNDEEP
javapasswordscharacter
Ali Bassam
Ali Bassam

Reputation: 9969

How to show characters in JPassword

getPassword() gives me an array of chars, but I want the password which looks like this ****** to shows up like this MyPaSwOrd, how can I do that ?

Guys I don't wanna extract the password, I just wanna write like " Enter your Password " inside the JPasswordField(), and when the user clicks on it, this goes away, and then he types his own password, which is like this * * * * * *

Upvotes: 3

Views: 2695

Answers (3)

Vineet Menon
Vineet Menon

Reputation: 738

Dirty Way

make one passwordfield and a text field... When you check the box, passwordField will be made invisible and textbox visible.

while in the unchecked condition, passwordField will be visible and textfield invisible.

and finally, make the textfield to copy the text entered in passwordField.

Upvotes: 0

Thomas Uhrig
Thomas Uhrig

Reputation: 31603

two ways:

  1. use the setEchoChar method (see here) and set a value of 0 (like the JavaDoc explains)
  2. use a common JTextField

EDIT:

If you want to have a text like "Enter PW" in your field that disappears on a click, then try something like this:

public class JPassword {

    public static void main(String[] args) {

        JFrame frame = new JFrame();

        final JPasswordField field = new JPasswordField();

        field.addFocusListener(new FocusListener() {

            @Override
            public void focusLost(FocusEvent arg0) {

                char c = 0;
                field.setEchoChar(c);
                field.setText("Enter PW");

            }

            @Override
            public void focusGained(FocusEvent arg0) {

                char c = 1;
                field.setEchoChar(c);
                            field.setText("");
            }
        });

        char c = 0;
        field.setText("Enter PW");
        field.setEchoChar(c);

        frame.setLayout(new FlowLayout());
        frame.getContentPane().add(new JButton("test"));
        frame.getContentPane().add(field);
        frame.pack();
        frame.setVisible(true);
    }
}

Note: You need to check whether the user has entered a password or not. If he had, don't execute the focuseGained method. Otherwise the password will disappear. But this shouldn't be a problem.

Upvotes: 1

GingerHead
GingerHead

Reputation: 8230

Try this:

String password = new String(passwordField.getText());

However, the documentation explicitly states that you shouldn't be using Strings for checking/manipulating/passing password information.

This explains how to check char[] passwords.

EDIT :

You can have an ordinary JField with "Enter here your password" as its text and put a click listener on it. whenever a user clicks on it, remove the JTextField and replace it with JPassword wih having the focus

Upvotes: 1

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