import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.Normalizer;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class Main extends JFrame {
public Main() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
JPanel pnl = new JPanel();
pnl.add(new JLabel("Enter text"));
final JTextField txtText;
txtText = new JTextField("to be removed");
pnl.add(txtText);
JButton btnRemove = new JButton("Remove");
ActionListener al = new ActionListener() {
public void actionPerformed(ActionEvent e) {
String text = txtText.getText();
text = Normalizer.normalize(text, Normalizer.Form.NFD);
txtText.setText(text.replaceAll("[^\\p{ASCII}]", ""));
}
};
btnRemove.addActionListener(al);
pnl.add(btnRemove);
add(pnl);
pack();
setVisible(true);
}
public static void main(String[] args) {
new Main();
}
}