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

class ConvertorFC extends JPanel implements ActionListener {

   private JLabel label1, label2, result;
   private JTextField input1;

   public ConvertorFC () {

	label1 = new JLabel ("Enter Fahrenheit temperature: ");
	label2 = new JLabel ("Celsius temperature: ");
	result = new JLabel (" --- ");
	input1 = new JTextField (5);

	input1.addActionListener(this);

	add(label1);
	add(input1);
	add(label2);
	add(result);

	setPreferredSize (new Dimension (300, 100));
	setBackground (Color.yellow);

   }

   public void actionPerformed (ActionEvent event) {

	int tempF, tempC;

	tempF = Integer.parseInt(input1.getText());
	tempC = (tempF - 32) * 5 / 9;

	result.setText (Integer.toString (tempC));
   }
}


public class ComputeTemp {

   public static void main (String[] args) {

	JFrame frame = new JFrame ("Temperature Convertor");
	frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

	ConvertorFC panel = new ConvertorFC();

	frame.getContentPane().add(panel);
	frame.pack();
	frame.setVisible(true);
   }
}