What is JLabel and JTextField?
JLabel is a component used for displaying a label for some components. It is commonly partnered with a text field or a password field. JTextField is an input component allowing users to add some text.
What is the function of JTextField control?
It is used to set the current font. It is used to remove the specified action listener so that it no longer receives action events from this textfield.
What does JTextField mean?
JTextField is a lightweight component that allows the editing of a single line of text. For information on and examples of using text fields, see How to Use Text Fields in The Java Tutorial. JTextField is intended to be source-compatible with java.
What are JTextField columns?
The columns property of JTextField is used to determine the preferred width of the object. If an initial String is provided as in your example new JTextField(“abc”, 3); then the field is painted to match the text size. Otherwise, the columns allow parallel stacking of text within the JTextField itself.
What is the difference between JTextField and JTextArea?
The main difference between JTextField and JTextArea in Java is that a JTextField allows entering a single line of text in a GUI application while the JTextArea allows entering multiple lines of text in a GUI application.
What is a JLabel?
JLabel is a class of java Swing . JLabel is used to display a short string or an image icon. JLabel can display text, image or both . JLabel is only a display of text or image and it cannot get focus . JLabel is inactive to input events such a mouse focus or keyboard focus.
What is a JScrollPane?
A JScrollPane provides a scrollable view of a component. When screen real estate is limited, use a scroll pane to display a component that is large or one whose size can change dynamically. Other containers used to save screen space include split panes and tabbed panes.
What is main difference between text field and JTextField?
The main difference between TextField and TextArea in Java is that the TextField is an AWT component that allows entering a single line of text in a GUI application while the TextArea is an AWT component that allows entering multiple lines of text in a GUI application.
How do I use JTextField?
java . The following code creates and sets up the text field: textField = new JTextField(20);…The Text Field API.
| Method or Constructor | Purpose |
|---|---|
| void setText(String) String getText() (defined in JTextComponent ) | Sets or obtains the text displayed by the text field. |
What is a JPanel?
JPanel, a part of the Java Swing package, is a container that can store a group of components. The main task of JPanel is to organize components, various layouts can be set in JPanel which provide better organization of components, however, it does not have a title bar.
What is JPasswordField?
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 JViewport?
A JViewport class defines the basic scrolling model and it is designed to support both logical scrolling and pixel-based scrolling. The viewport’s child called the view is scrolled by calling JViewport. setViewPosition() method.