Is this is bug in jdk 1.5 ??

[Amol Juvatkar]

hello friends,
On lost focus of text field I am doing validation and Keeping focus in same field with error dialog if validation not succeeded.
Problem is that dialog displayed more than 1 times .
Point to note is that
> same code work fine with jdk 1.4,
> if I comment line textField.request Focus(), code works fine even in jdk 1.5 ,
but I need to keep focus in same field.

----------------------- code -------------------------------

 
import javax.swing.*;
import java.awt.event.*;
 
public class JavaSwing_1_5 extends JFrame {
JTextField mainTextField;
JavaSwing_1_5(){
createScreen();
setActions();
}
private void createScreen(){
mainTextField = new JTextField("text1");
mainTextField.setPreferredSize(new java.awt.Dimension(100, 30));
 
JPanel mainPanel = new JPanel();
mainPanel.add(mainTextField);
mainPanel.add(new JTextField("text2"));
 
this.getContentPane().add(mainPanel);
}
private void setActions(){
mainTextField.addFocusListener(new FocusAdapter(){
public void focusLost(FocusEvent fe){
JOptionPane.showMessageDialog(null,"hi");
// comment following line and code will work fine
mainTextField.requestFocus();
}
});
}
public static void main(String[] args){
JavaSwing_1_5 frameObj = new JavaSwing_1_5();
frameObj.setSize(100,100);
frameObj.setDefaultCloseOperation(3);
frameObj.setVisible(true);
}
}
 

What can be the solution ??

[Craig Wood]

Java tries to make this easy for us with the InputVerifier class.