import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class palindrome{
    public static void main( String args[]) {
        JFrame frame = new JFrame("PAL_GUI");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE
);
final int FIELD_WIDTH = 20 ;
final JTextField inpField = new JTextField(FIELD_WIDTH);
final JTextField outField = new JTextField(FIELD_WIDTH);
JButton checkPalindromeButton = new JButton("ok");
checkPalindromeButton.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent event) {
        String s = inpField.getText();
        boolean ispalindrome = true ;
        for (int i = 0 , j = s.length()-1;i<j;i++,j--)
        {
            if(s.charAt(i) != s.charAt(j))
            {
                ispalindrome = false ; break ;
            }
        }
        outField.setText(""+ ispalindrome) ;
    }
});
frame.setLayout(new FlowLayout()) ;
frame.add(inpField);
frame.add(checkPalindromeButton) ;
frame.add(outField) ;
frame.setVisible(true) ; }}