How do I get the value of a JTextField?
“how to get the value of jtextfield in java” Code Answer
- button. addActionListener(new ActionListener(){
- public void actionPerformed(ActionEvent ae){
- String textFieldValue = testField. getText();
- // …. do some operation on value …
- }
- })
What is a JTextField in Java?
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 is the function of JTextField control?
A JTextField subclass that allows you to specify the legal set of characters that the user can enter. See How to Use Formatted Text Fields.
What is getText method 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.
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 main difference between TextField and JTextField?
1 Answer. JTextField renders an editable single-line text box. A user can input non-formatted text in the box. To initialize the text field, call its constructor and pass an optional integer parameter to it.
What is JTextField column?
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 GetText method in Java?
What is the function of JTextField control Mcq?
Commonly used Methods: 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 is JTextField in swing explain with example?
The object of a JTextField class is a text component that allows the editing of a single line text. It inherits JTextComponent class….Commonly used Constructors:
| Constructor | Description |
|---|---|
| JTextField(String text) | Creates a new TextField initialized with the specified text. |
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.