README.md

Description

This is just a simple java applet that will convert Degrees Fahrenheit to Degrees Celesius. Very simple and can be modified to convert back.

More Info

Submitted On
By	Randy McCleary
Level	Intermediate
User Rating	4.5 (36 globes from 8 users)
Compatibility	Java (JDK 1.2)
Category	Calculators & Science
World	Java
Archive File

Source Code

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 degrees 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 digit
   DecimalFormat oneDigit = new DecimalFormat("0.0");
   // Get the input
   double Fahrenheit = Double.parseDouble(e.getActionCommand());
   //ASSIGN the result of CALL Celsius function
   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 celsius
   celsius = 5.0 / 9.0 * ( Fahrenheit - 32);
   return celsius;
  }
}