I have a JTextField
. The same JTextField
will be used to get both name and password of the user. So if it's getting the username, I would display what the user is typing on the Text field. But if he's inserting a password, the field should not display the password (but display * characters instead).
How can I make a JTextField hide the characters that he/she types ?
Pseudocode :
If (usernameBool!=true) {
// Display normal text - user is able to see the password
} else {
// This is going to be a password field, so i need to not show the password to the user instead show it as ******* instead.
}
Note: I don't want to use JPasswordField
for this
Again, one possible solution is to use a CardLayout to swap components:
import java.awt.CardLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.*;
public class SwapFields {
private static final String TEXT_FIELD = "text field";
private static final String PASS_FIELD = "pass field";
public SwapFields() {
// TODO Auto-generated constructor stub
}
private static void createAndShowGui() {
final JTextField textField = new JTextField(10);
final JPasswordField passwordField = new JPasswordField(10);
final CardLayout cardLayout = new CardLayout();
final JPanel cardPanel = new JPanel(cardLayout);
cardPanel.add(textField, TEXT_FIELD);
cardPanel.add(passwordField, PASS_FIELD);
JToggleButton toggleBtn = new JToggleButton("Entering Password");
toggleBtn.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent iEvt) {
if (iEvt.getStateChange() == ItemEvent.SELECTED) {
cardLayout.show(cardPanel, PASS_FIELD);
passwordField.requestFocusInWindow();
} else {
cardLayout.show(cardPanel, TEXT_FIELD);
textField.requestFocusInWindow();
}
}
});
JButton showNamePasswordBtn = new JButton("Show Results");
showNamePasswordBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
System.out.println("Name: " + textField.getText());
// never do this!
System.out.println("Pass: " + new String(passwordField.getPassword()));
}
});
JPanel mainPanel = new JPanel();
mainPanel.add(cardPanel);
mainPanel.add(toggleBtn);
mainPanel.add(showNamePasswordBtn);
JFrame frame = new JFrame("SwapFields");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}