Why GetText is deprecated?
When calling getText you get a String (immutable object) that may not be changed (except reflection) and so the password stays in the memory until garbage collected. When calling getPassword you get a char array that may be modified, so the password will really not stay in memory.
What is JPasswordField in Java?
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.
What is GetText in Java?
GetText returns the text from the single-line text field. It returns only the first line of a multi-line text field. If you include iStartChar but not iNumChars , GetText returns the text from the iStartChar character to the end of the text.
How do I GetText from JPasswordField?
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.
How do I use 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….Commonly used Constructors:
| Constructor | Description |
|---|---|
| JPasswordField(String text) | Constructs a new JPasswordField initialized with the specified text. |
Which method of JPasswordField is used to set the password character?
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.
What is getText method?
The getText() method returns the innerText of an element. The text which is visible on the page along with sub elements. It ignores all leading and trailing spaces. The getAttribute() method fetches the text contained by an attribute in an html document.
What is getText base?
Description. GNU Internationalization utilities for the base system. This package includes the gettext and ngettext programs which allow. other packages to internationalize the messages given by shell scripts.
Which of the following method can be used to obtain the password from JPasswordField?
You can get the password using getPassword() method.
What are the different layout manager in Java?
The Abstract Windowing Toolkit (AWT) has the following five layout managers:
- awt. BorderLayout.
- awt. FlowLayout.
- awt. GridLayout.
- awt. CardLayout.
- awt. GridBagLayout.
What is the use of password field?
Answer: For security reasons, a password field does not show the characters that the user types. Instead, the field displays a character different from the one typed, such as an asterisk ‘*’. As another security precaution, a password field stores its value as an array of characters, rather than as a string.
How can I use getText in Java?
To use a JTextField for Input
- Declare a JTextField as an instance variable. Reason: If it’s an instance variable, it can be seen in all methods in the class.
- Assign an initial value to this variable by calling the JTextField constructor.
- Add the text field to a container.
- Input is done by calling the getText() .
What is jpasswordfield in Java?
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.
What happened to getpassword in Java?
The Java documentation explains: Deprecated. As of Java 2 platform v1.2, replaced by getPassword. Fetches a portion of the text represented by the component. Returns an empty string if length is 0. For security reasons, this method is deprecated. Use the getPassword method instead. But what are those security reasons? Any ideas about this?
What is the difference between gettext and getpassword?
When calling getText you get a String (immutable object) that may not be changed (except reflection) and so the password stays in the memory until garbage collected. When calling getPassword you get a char array that may be modified, so the password will really not stay in memory. share|improve this answer.
What does gettext () return in Java?
getText () returns a String, so that String is added (as standard Java behavior) to the pool of Strings. The Pool of Strings is cleaned by the Garbage Collector, but only when it acts (and it cannot be on demand).