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| import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class addJTextField extends JFrame
{
private JTextField textField;
public addJTextField(Container container)
{
textField = new JTextField(10);
textField.setVisible(true);
textField.setEditable(true);
container.add(textField);
TextEcout ctrlSaisie = new TextEcout();
textField.addFocusListener(ctrlSaisie);
}
private class TextEcout implements FocusListener
{
public void focusLost(FocusEvent e)
{
if ((int) e.getComponent().gettext < 1) :?:
{
JOptionPane.showMessageDialog(null,"Erreur de saisie");
}
}
public void focusGained(FocusEvent e)
{
}
}
} |
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