Java by API/javax.swing/JPasswordField

JPasswordField: getPassword()

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JPasswordField; public class Main extends JFrame {

 public static void main(String[] args) {
   Main that = new Main();
   that.setVisible(true);
 }
 public Main() {
   setSize(450, 350);
   this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   getContentPane().add(new PasswordPanel(), BorderLayout.SOUTH);
 }

} class PasswordPanel extends JPanel {

 JPasswordField pwf;
 public PasswordPanel() {
   pwf = new JPasswordField(10);
   pwf.setEchoChar("#");
   add(pwf);
   pwf.addKeyListener(new KeyAdapter() {
     public void keyReleased(KeyEvent e) {
       System.out.println(new String(pwf.getPassword()));
     }
   });
 }

}

 </source>
   
  
 
  

new JPasswordField()

   <source lang="java">

import java.awt.BorderLayout; import javax.swing.Box; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; public class MainClass {

 public static void main(String args[]) {
   JFrame f = new JFrame("JPasswordField Sample");
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   Box rowOne = Box.createHorizontalBox();
   rowOne.add(new JLabel("Username"));
   rowOne.add(new JTextField());
   Box rowTwo = Box.createHorizontalBox();
   rowTwo.add(new JLabel("Password"));
   rowTwo.add(new JPasswordField());
   f.add(rowOne, BorderLayout.NORTH);
   f.add(rowTwo, BorderLayout.SOUTH);
   f.setSize(300, 200);
   f.setVisible(true);
 }

}

 </source>
   
  
 
  

new JPasswordField(int columns)

   <source lang="java">

import java.awt.Color; import java.awt.FlowLayout; import javax.swing.BoxLayout; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; public class Main extends JFrame {

 public Main() {
   super("JLayeredPane Demo");
   setSize(256, 256);
   JPanel content = new JPanel();
   content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
   content.setOpaque(false);
   JLabel label1 = new JLabel("Username:");
   label1.setForeground(Color.white);
   content.add(label1);
   JTextField field = new JTextField(15);
   content.add(field);
   JLabel label2 = new JLabel("Password:");
   label2.setForeground(Color.white);
   content.add(label2);
   JPasswordField fieldPass = new JPasswordField(15);
   content.add(fieldPass);
   setLayout(new FlowLayout());
   add(content);
   ((JPanel) getContentPane()).setOpaque(false);
   ImageIcon earth = new ImageIcon("largejexpLogo.png");
   JLabel backlabel = new JLabel(earth);
   getLayeredPane().add(backlabel, new Integer(Integer.MIN_VALUE));
   backlabel.setBounds(0, 0, earth.getIconWidth(), earth.getIconHeight());
   super.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   setVisible(true);
 }
 public static void main(String[] args) {
   new Main();
 }

}

 </source>
   
  
 
  

new JPasswordField(String text, int columns)

   <source lang="java">

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame; import javax.swing.JPasswordField; public class Main extends JFrame {

 JPasswordField field = new JPasswordField("*", 10);
 public Main() {
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   field.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       System.out.println("Field=" + field.getText());
     }
   });
   getContentPane().add(field);
   pack();
   setVisible(true);
 }
 public static void main(String arg[]) {
   new Main();
 }

}

 </source>