//**************************************
//     
// Name: Temperature Converter
// Description:This is just a simple jav
//     a applet that will convert Degrees Fahre
//     nheit to Degrees Celesius. Very simple a
//     nd can be modified to convert back.
// By: Randy McCleary
//
//This code is copyrighted and has// limited warranties.Please see http://
//     www.Planet-Source-Code.com/vb/scripts/Sh
//     owCode.asp?txtCodeId=2627&lngWId;=2//for details.//**************************************
//     

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.text.DecimalFormat;
public class temperature extends JApplet implements ActionListener
    {
    JLabel lblFahrenheit;
    JLabel lblCelsius;
    JLabel outputCelsius;
    JTextField txtFahrenheit;
    double degreesFahrenheit;
    FlowLayout layout;
    public void init()
        {
        Container c = getContentPane();
        layout = new FlowLayout();
        layout.setAlignment( FlowLayout.LEFT);
        c.setLayout(layout);
        // instantiate JLabel object for Degrees
        //     Fahrenheit
        lblFahrenheit = new JLabel("Enter Fahrenheit and press enter: ");
        // instantiate JTextField object for the
        //     degrees fahrenheit
        txtFahrenheit = new JTextField(10);
        // instantiate JLabel object for Degrees
        //     Celesius
        lblCelsius = new JLabel("Degrees Celesius: ");
        // JLabel to display the equivalent degr
        //     ees Celsius
        outputCelsius = new JLabel("");
        c.add(lblFahrenheit);
        //CALL the addActionListener() method on
        //     the JTextField object
        // for the degrees Fahrenheit
        txtFahrenheit.addActionListener(this);
        // Add the textbox the celsius label and
        //     output label
        c.add(txtFahrenheit);
        c.add(lblCelsius);
        c.add(outputCelsius);
    }

    public void actionPerformed(ActionEvent e)
        {
        // Create a new decimal format to one di
        //     git
        DecimalFormat oneDigit = new DecimalFormat("0.0");
        // Get the input
        double Fahrenheit = Double.parseDouble(e.getActionCommand());
        //ASSIGN the result of CALL Celsius func
        //     tion
        double celsius = Celsius(Fahrenheit);
        //Display the results in the label
        outputCelsius.setText(oneDigit.format(celsius));
    }

    public double Celsius(double Fahrenheit)
        {
        double celsius;
        //Formulat to convert Farhrenheit to cel
        //     sius
        celsius = 5.0 / 9.0 * ( Fahrenheit - 32);
        return celsius;
    }

}