How do I convert "formatted double (String)" to double?

I have the following code:

 NumberFormat nf=NumberFormat.getInstance(Locale.FRANCE);
   nf.setMinimumFractionDigits(3);
    String  s=  nf.format(3456.32);
//   double d= Double.valueOf(s); error here
    System.out.println(s);

      

        
        
        
      

    

This code displays:

3 456,320

      

        
        
        
      

    

This is fine so far, but imagine, when I get the same format from JFormattedTextField, how can I convert "3 456 320" as a string to double (3456.32)?

I've already tried this:

String s="3 456,320";
double d= Double.valueOf(s);

      

        
        
        
      

    

but i get an error ...

EDIT

after a few tests i found that the code is not that reliable, e.g .:

 //this works
 String s="3456,6567";

 NumberFormat nf1=NumberFormat.getInstance(Locale.FRANCE);

 double d = (double) nf1.parse(s);

      

        
        
        
      

    

but this one:

 String s="3456,0";

 NumberFormat nf1=NumberFormat.getInstance(Locale.FRANCE);

 double d = (double) nf1.parse(s);

      

        
        
        
      

    

I am getting this error:

Exception on thread "main" java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Double

by cons I find this very reliable:

    double d = nf1.parse(s).doubleValue();

      

        
        
        
      

    

we have to test the software several times !!!