Problems with Decimal Symbols

[CooKieLord]

I am working on a program that converts degrees Celsius to degrees Fahrenheit. I am using doubles for variables, and noticed sometimes I get weird numbers like 45.4444444444444444445. I applied a DecimalFormat in order to reduce the decimals to two values. With all that said, instead of showing 45.44, it would show 45,44. I think the reason for this is that I am working in a French environment. As we all know, in French the decimal symbol is a comma as opposed of a period. The reason why I want to change it is that I made the programs using JTextFields. When I enter a string of sorts, it will not work. Here is the code, as I have said before, I work in a French environment, so don't mind the French comments.

code:

//Importer des extensions Java  import javax.swing.*;  import java.awt.event.*;  import java.awt.*;  import java.text.NumberFormat;  import java.text.DecimalFormat;  import java.text.DecimalFormatSymbols;  import java.util.Locale;  public class Exercice14_Degrees extends JApplet     implements ActionListener {        //Déclaration des éléments qui vont composer le IUG.        JLabel      etiquetteCelToFar                   ,etiquetteFarToCel;        JTextField  champCelToFar                   ,champFarToCel;        //Format décimal        DecimalFormat deuxChiffres = new DecimalFormat ("#.00");        //DecimalFormatSymbols.setDecimalSeparator (".");        //NumberFormat nf = NumberFormat.getInstance(Locale.CANADA);        //DecimalFormat.setDecimalFormatSymbols (".");        public void init ()        {           //Placement des composantes IUG           Container conteneur = getContentPane ();           conteneur.setLayout (new FlowLayout ());           etiquetteCelToFar = new JLabel ("Celsius en Fahrenheit.");           conteneur.add (etiquetteCelToFar);           champCelToFar = new JTextField (10);           conteneur.add (champCelToFar);           champCelToFar.addActionListener (this);           etiquetteFarToCel = new JLabel ("Fahrenheit en Celsius.");           conteneur.add (etiquetteFarToCel);           champFarToCel = new JTextField (10);           conteneur.add (champFarToCel);           champFarToCel.addActionListener (this);        } //Fin init        public void actionPerformed (ActionEvent e)        {           //Déclaration des variables utilisés pour calculer la puissance.           double  celsius    = 0.0                  ,fahrenheit = 0.0;       //Logique pour la conversion       //Inclus la conversion de String en Double, d'opération mathématiques et la sortie des résultats.       // conversion de Celsius en Fahrenheit.       if (e.getSource () == champCelToFar) {          celsius     = Double.parseDouble (champCelToFar.getText());          fahrenheit  = 9.0 / 5.0 * celsius + 32.0;          champFarToCel.setText (deuxChiffres.format (fahrenheit));          champCelToFar.setText ("");          celsius = 0;} //fin if       //conversion de Fahrenheit en Celsius       else {          if (e.getSource() == champFarToCel) {          fahrenheit  = Double.parseDouble (champFarToCel.getText());          celsius     = 5.0 / 9.0 * (fahrenheit - 32.0);          champCelToFar.setText (deuxChiffres.format (celsius));          champFarToCel.setText ("");          fahrenheit = 0;} //Fin if            } //fin else        }  //fin actionPerformed  } //fin class

How would I go on about? Is the problem caused by the Locale? If so, how do I change it?
If not, is the key in the DecimalFormatSymbol? I tried something but I'm not sure how to use it.

Can I also get a small evaluation regarding the legibility of my coding?

P.S. On a side note I read something about being able to highlight the syntax. Can someone tell me how?

[Ultrahex]

Ya the code works perfect for me (english machine)

for syntax highlighting its [syntax="java"] code here [/syntax]

(i disabled BBCode so i could show you)

[CooKieLord]

See, I know that it will work perfectly for English machines. The problem is that I am using a French one at school. I have found a solution to my problem.

I used a number format instead of decimal format.

Java:

//Format décimal DecimalFormat deuxChiffres = new DecimalFormat ("#.00"); //DecimalFormatSymbols.setDecimalSeparator ("."); //NumberFormat nf = NumberFormat.getInstance(Locale.CANADA);

Would become

Java:

//Format décimal        //DecimalFormat deuxChiffres = new DecimalFormat ("#.00");        //DecimalFormatSymbols.setDecimalSeparator (".");        NumberFormat nf = NumberFormat.getInstance(Locale.CANADA);

At which point, I would remove the commented stuff to avoid confusion and fix the output so that i becomes

Java:

champFarToCel.setText (nf.format (fahrenheit)); champCelToFar.setText (deuxChiffres.format (celsius));

Anyways, thanks for letting me know about the syntax highlighting and sorry it took so long to reply, my school blocked compsci -_-.

[Clayton]

May I ask which school(board) you're from?

[CooKieLord]

I'm from CECLFCE

Conseil des écoles catholique de langue francaise du centre-est, I think.