Enable a search button as soon as a character is entered in text field
I have a text field (java swing) and a search button.
When the user hits RETURN, the text field fires an action event.
Is it possible that as soon as I enter a character in the text field, it fires an action event without hitting the RETURN key or pressing the search button?
What I want to achieve is, if the user does not enter any text in the text field, then the search button is disable. As soon as a character is entered in the text field the search button is enable. How can I do this?
// Create a text field with some initial text
JTextField textfield =new JTextField("Initial Text");
// Create a text field with some initial text and a default number of columns.
// The number of columns controls the preferred width of the component;
// each column is rougly the size of an M in the current font.
int cols = 30;
textfield =new JTextField("Initial Text", cols);
// Listen for action events, which are fired when the user hits RETURN
textfield.addActionListener(new MyActionListener());
class MyActionListenerimplements ActionListener{
publicvoid actionPerformed(ActionEvent evt){
JTextField textfield = (JTextField)evt.getSource();
process(textfield.getText());
}
}
