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Customizing JFormattedTextField to create IP Address Field

1 reply on 1 page. Most recent reply: Aug 25, 2003 5:39 PM by zhangfeng

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Kate Lapan Fox

Posts: 2
Nickname: kfox
Registered: Aug, 2002

Customizing JFormattedTextField to create IP Address Field

Posted: Aug 21, 2002 2:52 PM

I'm trying to create an IP Address field that will be very intuitive.

I've a JFormattedTextField that I've customized. It looks good, but I want to make it have more functionality. I can't find a way to intercept user entry after every character. I've looked on the net but I've only been able to find how to do the simplest things.

My code below:

<java>
import java.awt.Font;
import javax.swing.text.MaskFormatter;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class IPAddressTest {

public static void main(String[] args) {
JFrame frame = new JFrame("ip address test");
JPanel panel = new JPanel();

try {
MaskFormatter ipmask = new MaskFormatter("###.###.###.###");
ipmask.setPlaceholderCharacter(' ');
JFormattedTextField field = new JFormattedTextField(ipmask);
field.setFont(new Font("Courier", Font.PLAIN, 12));
field.setColumns(16);
panel.add(field);
} catch (Exception e) {
e.printStackTrace();
}

frame.getContentPane().add(panel);
frame.pack();
frame.show();
}
}
</java>

zhangfeng

Posts: 1
Nickname: zhinux
Registered: Aug, 2003

Re: Customizing JFormattedTextField to create IP Address Field

Posted: Aug 25, 2003 5:39 PM

How to control the segment's size ?

thx!

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