JFormattedTextField.isEditValid() not returning false

Question

I have the following code, and in the text field you can type all kinds of letters or numbers and it always shows up as having valid input. Why is this? Also, why is the ".01" truncated off when the application starts up? Basically, I want the user to be forced to enter in a floating point number.
Thank you for your time,
Brandon Murphy
import java.awt.Color;
import java.text.ParseException;
import javax.swing.BorderFactory;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.MaskFormatter;
public class DocumentListenerAdapter implements DocumentListener
     public DocumentListenerAdapter(JFormattedTextField textField)
          _textField = textField;
     public void changedUpdate(DocumentEvent e) {this.verify();}
     public void insertUpdate(DocumentEvent e) {this.verify();}
     public void removeUpdate(DocumentEvent e) {this.verify();}
     protected void verify()
          if(_textField.isEditValid() == true)
               _textField.setBorder(null);
          else //(_textField.isEditValid() == false)
               _textField.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.RED));
          System.out.println(_textField.isValid() + ", " +  _textField.getText());
     private JFormattedTextField      _textField      = null;
  public static void main(String argv[])
          JFrame frame = new JFrame("AbstractTextField Test");
         JFormattedTextField textField1 = new JFormattedTextField(new Float(10.01));
         textField1.getDocument().addDocumentListener(new DocumentListenerAdapter(textField1));
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setContentPane(textField1);
          frame.setVisible(true);
          frame.pack();
}Edited by: officialhopsof on Jun 16, 2010 2:07 AM

Answer 1

You never actually set a format on the text field.
If you turn on setAllowsInvalid the user can actual type "10.blabla" and it'll just accept that as 10, not sure how to fix that.
import java.awt.Color;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import javax.swing.BorderFactory;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JFormattedTextField.AbstractFormatter;
import javax.swing.JFormattedTextField.AbstractFormatterFactory;
import javax.swing.text.InternationalFormatter;
public class DocumentListenerAdapter {
    public static void main(String args[]) {
        JFrame frame = new JFrame("AbstractTextField Test");
        final JFormattedTextField textField1 = new JFormattedTextField(new Float(10.01));
        textField1.setFormatterFactory(new AbstractFormatterFactory() {
            @Override
            public AbstractFormatter getFormatter(JFormattedTextField tf) {
                NumberFormat format = DecimalFormat.getInstance();
                format.setMinimumFractionDigits(2);
                format.setMaximumFractionDigits(2);
                InternationalFormatter formatter = new InternationalFormatter(format);
                formatter.setAllowsInvalid(false);
                return formatter;
        textField1.addPropertyChangeListener("editValid", new PropertyChangeListener() {
            @Override
            public void propertyChange(PropertyChangeEvent evt) {
                boolean valid = (Boolean) evt.getNewValue();
                System.out.println(valid + ", " + textField1.getValue() + ", "
                        + textField1.getText());
                if (valid) {
                    textField1.setBorder(null);
                else {
                    textField1.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.RED));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(textField1);
        frame.setVisible(true);
        frame.pack();
}