Examples of java.util.Scanner.nextDouble()

java.util.Scanner.nextDouble()
Scans the next token of the input as a double. This method will throw InputMismatchException if the next token cannot be translated into a valid double value. If the translation is successful, the scanner advances past the input that matched.
If the next token matches the Float regular expression defined above then the token is converted into a double value as if by removing all locale specific prefixes, group separators, and locale specific suffixes, then mapping non-ASCII digits into ASCII digits via {@link Character#digit Character.digit}, prepending a negative sign (-) if the locale specific negative prefixes and suffixes were present, and passing the resulting string to {@link Double#parseDouble Double.parseDouble}. If the token matches the localized NaN or infinity strings, then either "Nan" or "Infinity" is passed to {@link Double#parseDouble(String) Double.parseDouble} as appropriate. @return the double scanned from the input @throws InputMismatchException if the next token does not match the Float regular expression, or is out of range @throws NoSuchElementException if the input is exhausted @throws IllegalStateException if this scanner is closed

    // TODO Auto-generated method stub
    
    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      
      //fails

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    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      
      //fails
      ColorModel rgb = ColorTransformer.xyz2rgb(ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB)));

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    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      
      //fails
      ColorModel rgb = ColorTransformer.xyz2rgb(ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB)));
      //ok

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    // TODO Auto-generated method stub
    
    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      //fails
      ColorModel rgb = ColorTransformer.xyz2rgb(ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB)));

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    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      //fails
      ColorModel rgb = ColorTransformer.xyz2rgb(ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB)));
      //ok

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    while(true) {
      Scanner in = new Scanner(System.in);
       
      double n1 = in.nextDouble();
      double n2 = in.nextDouble();
      double n3 = in.nextDouble();
      
      //fails
      ColorModel rgb = ColorTransformer.xyz2rgb(ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB)));
      //ok
      //ColorModel rgb = ColorTransformer.lab2xyz(new ColorModel(n1, n2, n3, ColorType.LAB));

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      // attente que l'utilisateur donne l'�tat engendr� et sa note
      System.out.println("Quel est l'�tat engendr� ?");
      newState = input.nextInt();
      
      System.out.println("Quelle note donnez vous ?");
      userScore = (float) input.nextDouble(); // !! mettre une virgule dans la console (pas de .)
      // dans cette fen�tre l'utilisateur pourra d�cider de sauvegarder la matrice des QValues (boolean wantToSave)
      
      qValue = computeQValue(currentState, selectedAction, userScore, newState);
      
      updateQValue(currentState, selectedAction, qValue);

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            if (result == JFileChooser.APPROVE_OPTION) {
                try {
                    FileReader inpt = new FileReader(fileName);
                    Scanner scn = new Scanner(inpt);
                    while (scn.hasNextDouble()) {
                        timeSeriesList.add(scn.nextDouble());
                    }
                    scn.close();
                    inpt.close();
                    timeSeries.setTimeSeries(timeSeriesList);
                    listSeries = new ArrayList();

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    static void Addition(){
       Scanner numberReciever = new Scanner(System.in);
       double num1, num2, answer;
       
       System.out.println("Calculator> Enter your first number: ");
       num1 = numberReciever.nextDouble();
    
       System.out.println("Calculator> Enter your second number: ");
       num2 = numberReciever.nextDouble();
    
       answer = num1 + num2;

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       System.out.println("Calculator> Enter your first number: ");
       num1 = numberReciever.nextDouble();
    
       System.out.println("Calculator> Enter your second number: ");
       num2 = numberReciever.nextDouble();
    
       answer = num1 + num2;
       System.out.println("Calculator> The answer is " + answer);  
       System.out.println("Calculator> Thank you for using the calculator! More coming soon.");
       System.out.println("Calculator> This program ran for " + System.currentTimeMillis() + " miliseconds.");

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