How to make JFormattedTextField accept integer without decimal point (comma)?

Question

I used JFormattedTextField withNumberFormat in this way:

-Creat a JFormattedTextField refernce

JFormattedTextF         


        

Answer 1

Try this, This is a complete solution for creating and validating number JTextField

NumberFormat format = NumberFormat.getInstance();
format.setGroupingUsed(false);//Remove comma from number greater than 4 digit
NumberFormatter sleepFormatter = new NumberFormatter(format);
sleepFormatter.setValueClass(Integer.class);
sleepFormatter.setMinimum(0);
sleepFormatter.setMaximum(3600);
sleepFormatter.setAllowsInvalid(false);

sleepFormatter.setCommitsOnValidEdit(true);// committ value on each keystroke instead of focus lost

JFormattedTextField textFieldSleep = new JFormattedTextField(sleepFormatter);
textFieldSleep.setText("0");