JSpinner
typically uses a JTextComponent
for its editor. You could get the editor and apply a DocumentFilter
to it.
This will allow you to filter the text coming into the document.
Check these, often cited, examples
Example
JFormattedTextField
is installing it's own DocumentFilter
. You can overcome this by providing your own PlainDocument
that returns it's own filter
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.DocumentFilter;
import javax.swing.text.JTextComponent;
import javax.swing.text.PlainDocument;
public class TestSpinner01 {
public static void main(String[] args) {
new TestSpinner01();
}
public TestSpinner01() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JSpinner spinnerUpDown = new JSpinner();
spinnerUpDown.setModel(new SpinnerNumberModel(0, 0, 1000, 10));
spinnerUpDown.setEditor(new JSpinner.NumberEditor(spinnerUpDown, "0000"));
System.out.println(spinnerUpDown.getEditor());
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridBagLayout());
frame.add(spinnerUpDown);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
PlainDocument doc = new PlainDocument() {
private TestFilter filter;
@Override
public DocumentFilter getDocumentFilter() {
if (filter == null) {
filter = new TestFilter();
}
return filter;
}
};
JTextComponent txt = ((JSpinner.DefaultEditor) spinnerUpDown.getEditor()).getTextField();
txt.setDocument(doc);
}
});
}
public class TestFilter extends DocumentFilter {
@Override
public void remove(DocumentFilter.FilterBypass fb, int offset, int length) throws BadLocationException {
System.out.println("remove");
super.remove(fb, offset, length);
}
@Override
public void insertString(DocumentFilter.FilterBypass fb, int offset, String string, AttributeSet attr) throws BadLocationException {
System.out.println("insert");
super.insertString(fb, offset, string, attr);
}
@Override
public void replace(DocumentFilter.FilterBypass fb, int offset, int length, String text, AttributeSet attrs) throws BadLocationException {
System.out.println("Replace...");
super.replace(fb, offset, length, text, attrs);
}
}
}
Strangely enough, you example code worked well for me, but the problem I actually had was to do with the formatter