import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.ParseException;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.text.MaskFormatter;
public class Main {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new FormattedTextFieldExample();
}
});
}
}
class FormattedTextFieldExample {
public FormattedTextFieldExample() {
initComponents();
}
private void initComponents() {
JFrame frame = new JFrame("JFormattedTextField Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MaskFormatter mask = null;
try {
mask = new MaskFormatter("##h##min##s");// the # is for numeric values
mask.setPlaceholderCharacter('#');
} catch (ParseException e) {
e.printStackTrace();
}
final JFormattedTextField timeField = new JFormattedTextField(mask);
// ActionListener for when enter is pressed
timeField.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
Object source = ae.getSource();
if (source == timeField) {
// parse to a valid time here
System.out.println(timeField.getText());
}
}
});
frame.add(timeField);
frame.pack();
frame.setVisible(true);
}
}
转播
