If you don't specify the locale in String.format() method, it uses default locale by calling Locale.getDefault() method. The format Method.
For instance, the way currencies are formatted is widely different in the countries around the world. Format strings support many features. This class allows you to control the display of leading and trailing zeros, prefixes and suffixes, grouping (thousands) separators, and the decimal separator. The format strings are thus intended to be recognizable to C programmers but not necessarily completely compatible with those in C. Examples of expected usage: Java String format() The java string format() method returns the formatted string by given locale, format and arguments. Also, Java formatting is more strict than C's; for example, if a conversion is incompatible with a flag, an exception will be thrown. that will be converted the basic manner in which the data will be represented (decimal, hexadecimal, etc.)
Java NumberFormat. The format method formats multiple arguments based on a format string. The format() method of java language is like sprintf() function in c language and printf() method of java language. The format string consists of static text embedded with format specifiers; except for the format specifiers, the format string is output unchanged. Different cultures use different ways to represent numbers. The following example uses the "R" format string with a Double value that does not round-trip successfully, and also uses the "G17" format string to successfully round-trip the original value. NumberFormat format=Number.getInstance(); format.setMinimumFractionDigits(2); //nb de chiffres apres la virgule String s=format.format(monDouble); //donne la chaine representant le double avec 2 chiffres apres la virgules System.out.println(s); - [TucoBouch] - Format Specifiers in Java Format specifiers begin with a percent character (%) and terminate with a “type character, ” which indicates the type of data (int, float, etc.) Java NumberFormat tutorial shows how to format numbers in Java. Java Double To String 2 Decimal Places Examples. Customizing Formats You can use the DecimalFormat class to format decimal numbers into locale-specific strings. To work around this problem, you can format Double values by using the "G17" standard numeric format string.
Oct 20, 2016 Core Java, Examples, Snippet, String comments When dealing with double values in your application, it is sometimes required to convert the values into String. In this tutorial, we'll just cover some basics. Convert using String.format() Below are examples on how to convert double to String in Java using two decimal places. In C inapplicable flags are silently ignored.