The fix for the bug in NumberUtils class in Thymeleaf

NumberUtilsFix.java

private static DecimalFormatSymbols computeDecimalFormatSymbols(
        final NumberPointType decimalPointType, final NumberPointType thousandsPointType, final Locale locale) {

    Validate.notNull(decimalPointType, "Decimal point type cannot be null");
    Validate.notNull(thousandsPointType, "Thousands point type cannot be null");
    Validate.notNull(locale, "Locale cannot be null");
    
    final DecimalFormatSymbols symbols = new DecimalFormatSymbols(locale);
    
    switch (decimalPointType) {
        case POINT :
            symbols.setDecimalSeparator('.');
            break;
        case COMMA :
            symbols.setDecimalSeparator(',');
            break;
        case WHITESPACE :
            symbols.setDecimalSeparator(' ');
            break;
        case DEFAULT :
            final DecimalFormatSymbols dfs = new DecimalFormatSymbols(locale);
            symbols.setDecimalSeparator(dfs.getDecimalSeparator());
            break;
        case NONE :
            // This should never happen
            symbols.setDecimalSeparator('?');
            break;
    }
    switch (thousandsPointType) {
        case POINT :
            symbols.setGroupingSeparator('.');
            break;
        case COMMA :
            symbols.setGroupingSeparator(',');
            break;
        case WHITESPACE :
            symbols.setGroupingSeparator(' ');
            break;
        case DEFAULT :
            final DecimalFormatSymbols dfs = new DecimalFormatSymbols(locale);
            symbols.setGroupingSeparator(dfs.getGroupingSeparator());
            break;
        case NONE :
            // This should never be shown
            symbols.setGroupingSeparator('?');
            break;
    }
    
    return symbols;
    
}