Notes

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Celsius extends JFrame {
private JLabel tempcelsius;
private JTextField celsiustxtfield;
private JLabel result;
private JTextField resulttxtfield;
private Container background;
private JPanel panel;
private JButton convert;

public Celsius() {
createGUI();
}
public void createGUI() {
setSize(400,500);
setDefaultCloseOperation(EXIT_ON_CLOSE);
background=getContentPane();

panel=new JPanel();
background.add(panel);
tempcelsius=new JLabel("Celsius");
panel.add(tempcelsius);

celsiustxtfield=new JTextField(10);
panel.add(celsiustxtfield);

result=new JLabel("Result");
panel.add(result);

resulttxtfield=new JTextField(10);
panel.add(resulttxtfield);

convert=new JButton("Convert");
convert.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
double celsius=0;
celsius=Integer.parseInt(celsiustxtfield.getText());
double farenheit;
farenheit = 9.0/5.0 * celsius + 32;

resulttxtfield.setText("results="+farenheit);

}
});
panel.add(convert);
setVisible(true);



}
public static void main(String[] args) {
// TODO Auto-generated method stub
Celsius obj=new Celsius();

}

}