How to format text of TextField? JavaFX

问题

For example, if I enter 32164578542324236.97325074, this number should be displayed in a TextField like 32,164,578,542,324,236.97325074. I tried to handle this, but unsuccessfully:

    inputField.textProperty().addListener(new ChangeListener<String>() {
        @Override
        public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
            BigDecimal bd = new BigDecimal(newValue);
            NumberFormat formatter = NumberFormat.getNumberInstance();             
            inputField.setText(formatter.format(newValue));
        }
    });

Maybe it would be better to use inputField.setTextFormatter(); but I'm not familiar with this method. Thanks in advance!

回答1:

Try :

BigDecimal bd = new BigDecimal(newValue);
DecimalFormat formatter  = new DecimalFormat(",###");// seperate them by ',' while digits after '.' are excluded
String newestValue = formatter.format(bd)+newValue.substring(newValue.indexOf("."));// concatenate with the digits after '.'
inputField.setText(newestValue);

来源：https://stackoverflow.com/questions/31382250/how-to-format-text-of-textfield-javafx