field = new JFormattedTextField();
field.getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e) {
Runnable format = new Runnable() {
@Override
public void run() {
String text = field.getText();
if(!text.matches("\\d*(\\.\\d{0,2})?")){
field.setText(text.substring(0,text.length()-1));
}
}
};
SwingUtilities.invokeLater(format);
}
@Override
public void removeUpdate(DocumentEvent e) {
}
@Override
public void changedUpdate(DocumentEvent e) {
}
});
https://stackoverflow.com/questions/33348481/restrict-input-of-jtextfield-to-double-numbers?r=SearchResults
