JPasswordField() constructor from JPasswordField has the following syntax.
public JPasswordField()
In the following code shows how to use JPasswordField.JPasswordField() constructor.
/*from w w w.j av a 2 s . co m*/ 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 Main { 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); } }