Swing JPasswordField

In this tutorial you will learn about the Swing JPasswordField and its application with practical example.

JPasawordField is a subclass of JTextField . It’s a lightweight single line component which allows users for editing where the view indicates something was typed , but does not show the original character.

Table Of Contents−

Swing JPasswordField
JPasswordField Class Declaration

JPasswordField Class Declaration

public class JPasswordField extends JTextField

1	public class JPasswordField extends JTextField

JPasswordField Constructor

Some important and usable constructor summary listed below.

JPasswordField(): This constructor is used to construct a new Password Field.

JPasswordField(Document doc, String text, int columns): This constructor is used to construct a Password Field that uses the given text storage model and the given number of columns.

JPasswordField(int columns): This constructor is used to construct an empty Password Field with specific number of columns.

JPasswordField(String text): This constructor is used to construct a Password field with given string.

JPasswordField(String text, int columns): This constructor is used to construct a Password field with given string and columns.

JPasswordField Method

Some of Useable and important method are listed below.

char[] getPassword(): This method is used to return text of this component.

String getText(): This method is Deprecated , used to get Text of this component.

AccessibleContext getAccessibleContext(): This method returns AccessibleContext which is associated with this JPasswordField.

protected String paramString(): This method returns a string representation of this JTextField.

Example :-

In the below example I have used simple password field so that we can easily understand what does it mean.

package w3addaswing;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;

public class W3ADDASwing {

    public static void main(String[] args) {
        // TODO code application logic here
        JFrame frame = new JFrame("JPasswordField Example W3ADDA");
        JPasswordField pwd = new JPasswordField();
        JLabel lbl=new JLabel("Enter Password");
        lbl.setBounds(20,100,120,30);
        pwd.setBounds(120, 100, 100, 30);
        frame.add(lbl);
        frame.add(pwd);
        frame.setSize(400, 400);
        frame.setLayout(null);
        frame.setVisible(true);
    }
}

package w3addaswing;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPasswordField;

public class W3ADDASwing {

public static void main(String[] args) {

// TODO code application logic here

JFrame frame = new JFrame("JPasswordField Example W3ADDA");

JPasswordField pwd = new JPasswordField();

JLabel lbl=new JLabel("Enter Password");

lbl.setBounds(20,100,120,30);

pwd.setBounds(120, 100, 100, 30);

frame.add(lbl);

frame.add(pwd);

frame.setSize(400, 400);

frame.setLayout(null);

frame.setVisible(true);

}

Output :-

Just copy this code or run it, you will get your result like above image.

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Swing JPasswordField