FULL PRODUCT VERSION :
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows XP Home SP2

A DESCRIPTION OF THE PROBLEM :
In the code sample below the JOptionPane pops up 4 times before one can enter the Textfield again after an erroneous input.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JOptionPane should appear only once.
ACTUAL -
Clicking [OK] made the OptionPane reappear.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class T extends JFrame
{
  JTextField tf1;
 
  public T()
  { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container cp= getContentPane();
    cp.setLayout(null);
    setSize(500,300);
    tf1= new JTextField();
    tf1.setBounds(200,80,100,25);
    tf1.addFocusListener(new FocusAdapter()
    { public void focusLost(FocusEvent e)
      { try
        { double d= Double.parseDouble(tf1.getText());
          if (d<4. || d>50.)
          { throw new NumberFormatException();
          }
        }
        catch (NumberFormatException nfe)
        { JOptionPane.showMessageDialog(T.this,
           "Erroneous input.\nValid range is 4-50.",
          "Error", JOptionPane.ERROR_MESSAGE);
          tf1.requestFocus();
        }
      }
    });
    cp.add(tf1);
    JTextField tf2= new JTextField();
    tf2.setBounds(200,120,100,25);
    cp.add(tf2);
    setVisible(true);
  }
 
  static public void main(String args[])
  { new T();
  }
}

---------- END SOURCE ----------
###@###.### 2004-12-24 10:11:24 GMT