how to use jpassword in java netbeans | Java Swing Tutorial for beginners | Java GUI |#4

Java Swing | JPasswordField PasswordField is a part of javax.swing package . The class JPasswordField is a component that allows editing of a single line of text where the view indicates that something was typed by does not show the actual characters. JPasswordField inherits the JTextField class in javax.swing package. Constructors of the class are : #JPassword #Java #Swing #tutorial #beginners #LearnJava #JavaGUI

JPasswordField(): constructor that creates a new PasswordField
 
JPasswordField(int columns) : constructor that creates a new empty PasswordField with specified number of columns.
 
JPasswordField(String Password) : constructor that creates a new empty Password field initialized with the given string.
 
JPasswordField(String Password, int columns) : constructor that creates a new empty P

asswordField with the given string and a specified number of columns .
 
JPasswordField(Document doc, String Password, int columns) : constructor that creates a Passwordfield that uses the given text storage model and the given number of columns. 
 

Commonly used method of JPasswordField : char getEchoChar() : returns the character used for echoing in JPasswordField. setEchoChar(char c) : set the echo character for JPasswordField. String getPassword() : returns the text contained in JPasswordField. String getText() : returns the text contained in JPasswordField.

Creating Password Field by Using JPasswordField Class

In this tutorial, we are going to show you how to create password field using JPasswordField class.

The password field allows user to enter password. For security reason, password field displays echo characters instead of the password itself. The default echo character is (*).

In Java swing, to create a password field you use JPasswordField class. You can assign a different echo character other than the default one (*) using setEchoChar() method. You can get the password using getPassword() method. If you use copy() orcut() method, you will get nothing but beep sound.

The following table illustrates some common uses constructors of the JPasswordField class: JPasswordField Constructors Meaning public JPasswordField () Creates a new password field. public JPasswordField (Document doc, String text, int columns) Creates a new password field with given document and number of columns. public JPasswordField(String text) Creates a new password field with a given text. public JPasswordField(int columns) Creates a new password field with a given columns. public JPasswordField(String text, int columns) Creates a new password field with given text and number of columns. Example of using JPasswordField class

In this example, we will use JPasswordField class to create a simple password field. Java JPasswordField

The object of a JPasswordField class is a text component specialized for password entry. It allows the editing of a single line of text. It inherits JTextField class. JPasswordField class declaration

Let's see the declaration for javax.swing.JPasswordField class. JPasswordField is a lightweight component that allows the editing of a single line of text where the view indicates something was typed, but does not show the original characters. You can find further information and examples in How to Use Text Fields, a section in The Java Tutorial.

JPasswordField is intended to be source-compatible with java.awt.TextField used with echoChar set. It is provided separately to make it easier to safely change the UI for the JTextField without affecting password entries.

NOTE: By default, JPasswordField disables input methods; otherwise, input characters could be visible while they were composed using input methods. If an application needs the input methods support, please use the inherited method, enableInputMethods(true). Swing is not thread safe. For more information see Swing's Threading Policy.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of support for long term storage of all JavaBeansTM has been added to the java.beans package. Please see XMLEncoder.

how to use jpassword in java netbeans | Java Swing Tutorial for beginners | Java GUI how to use jpassword in java netbeans | Java Swing Tutorial for beginners | Java GUI how to use jpassword in java netbeans | Java Swing Tutorial for beginners | Java GUI

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