Re: Focus validation problem with JTextfield

chrilli wrote:
....


Try this variant and see if it makes more sense to you..

<sscce>
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TestFocus {

 public static void main(String[] args) {

  JFrame frame = new JFrame("Textfield test");

  final boolean valid = false;
  final JTextField textfield = new JTextField();
  final JTextField textfield2 = new JTextField();
  textfield.setColumns(20);
  textfield2.setColumns(20);

  textfield.addFocusListener(new FocusListener() {
    int loss = 0;
    int gain = 0;
    public void focusLost(FocusEvent e) {
      if (!e.isTemporary()) {
        if (!valid) {
          System.out.println( ++loss + " focus lost" );
          textfield.requestFocus();
        }
      }
    }
    public void focusGained(FocusEvent e) {
      System.out.println( ++gain + " focus gained" );
    }
  });

  frame.getContentPane().setLayout(new FlowLayout());

  frame.getContentPane().add(textfield);
  frame.getContentPane().add(textfield2);

  frame.pack();
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.setVisible(true);
 }
}
</sscce>

Andrew T.