Java tutorial
import java.awt.BorderLayout; import java.text.NumberFormat; import javax.swing.JFormattedTextField; import javax.swing.JFrame; import javax.swing.JPanel; public class Main { public static void main(String[] args) { NumberFormat numberFormatGuFalse = NumberFormat.getNumberInstance(); numberFormatGuFalse.setGroupingUsed(false); JFormattedTextField jftFieldGuFalse = new JFormattedTextField(numberFormatGuFalse); NumberFormat numberFormatGuTrue = NumberFormat.getNumberInstance(); // numberFormatGuFalse.setGroupingUsed(true); // not necessary as is default JFormattedTextField jftFieldGuTrue = new JFormattedTextField(numberFormatGuTrue); JPanel panel = new JPanel(new BorderLayout()); panel.add(jftFieldGuFalse, BorderLayout.NORTH); panel.add(jftFieldGuTrue, BorderLayout.SOUTH); JFrame frame = new JFrame(); frame.getContentPane().add(panel); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }