Re: jFormattedTextField

Knute Johnson <>
Mon, 22 Jan 2007 16:43:31 -0800
GreenMountainBoy wrote:

Could someone post an example of using jFormattedTextField for
inputting a fixed width field accepting whole numbers only? I sure
would appreciate it! I have been experimenting with this
jFormettedTextFielld and am having trouble with the example from the
Sun API.

Thanks a million.


import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.*;
import javax.swing.text.*;

public class test extends JFrame {
     public test() {

         try {
             MaskFormatter mf = new MaskFormatter("####");
             JFormattedTextField tf = new JFormattedTextField(mf);
         } catch (ParseException pe) {


     public void actionPerformed(ActionEvent ae) {
         String ac = ae.getActionCommand();

     public static void main(String[] args) {
         Runnable r = new Runnable() {
             public void run() {
                 new test();


Knute Johnson
email s/nospam/knute/

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