Scanner/Locale Trouble

(The title is misleading, this post has nothing to do with the Scanner class. Before I edited my post it had to do with the Scanner class, but not anymore).

Hey, I've made a simple GUI which contains some JTextFields (Swing) where the user gets to input a double (but since it's JTextFields the input gets stored in a String). In order to process inputed string and to extract the double I use Double.parseDouble(inputedString).
But it says it's an invalid input if I enter for example "3,14". Observe, ',' decimal point instead of a '.' (because it's swedish standards). So in order to get around this I tried adding this in the beginning of my code:

Code:

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Locale.setDefault(new Locale("sv","SE")); //according to this book I got, this should set it to swedish standards

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This kind of works since my program now outputs doubles with a ',' as decimal point. But I still can't input using a ','. Help? Let me know if you need the rest of my code.

Thanks.

See the API docs for DecimalFormat and it's parse method. And make sure to read the entire method description carefully.