Oracle
docs.oracle.com › javase › 8 › docs › api › java › text › NumberFormat.html
NumberFormat (Java Platform SE 8 )
1 week ago - Java™ Platform Standard Ed. 8 ... NumberFormat is the abstract base class for all number formats. This class provides the interface for formatting and parsing numbers.
Oracle
docs.oracle.com › en › java › javase › 11 › docs › api › java.base › java › text › NumberFormat.html
NumberFormat (Java SE 11 & JDK 11 )
January 20, 2026 - The default implementation provides rounding modes defined in RoundingMode for formatting numbers. It uses the round half-even algorithm. To change the rounding mode use setRoundingMode. The NumberFormat returned by the static factory methods is configured to round floating point numbers using half-even rounding (see RoundingMode.HALF_EVEN) for formatting.
FormattingNumbers - Java - Code with Mosh Forum
I was trying to do some hands-on formatting numbers. my code: NumberFormat currency= NumberFormat.getCurrencyInstance(); String res= currency.format(1234567.891); System.out.println(res); output: ? 1,234,567.89 I didnt get any currency symbol. anything i have to add to get it or wt can i do ... More on forum.codewithmosh.com
0
September 5, 2022java - Use NumberFormat or DecimalFormat - Stack Overflow
If you want to specify how your numbers are formatted, then you must use the DecimalFormat constructor. If you want "the way most numbers are represented in my current locale", then use the default instance of NumberFormat. More on stackoverflow.com
java - How to make a number format? - Stack Overflow
Locale localeID = new Locale("in", "ID"); String pattern = "###,###.###"; NumberFormat nf = NumberFormat.getNumberInstance(localeID); DecimalFormat df = (DecimalFormat)nf; df.applyPattern(pattern); String output = df.format(value); ... The DecimalFormat class: It is a Java class that allows ... More on stackoverflow.com
How do I format a number in Java? - Stack Overflow
The other more cryptic methods ... around java.util.Formatter should keep C programmers happy(ish). ... As Robert has pointed out in his answer: DecimalFormat is neither synchronized nor does the API guarantee thread safety (it might depend on the JVM version/vendor you are using). Use Spring's Numberformatter instead, which ... More on stackoverflow.com
Videos
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Curso Java Completo - Aula 87: Formatação de números e moeda ...
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Curso de Java #96: Formatando Números: NumberFormat - YouTube
Baeldung
baeldung.com › home › java › java numbers › number formatting in java
Number Formatting in Java | Baeldung
August 9, 2024 - DecimalFormat is one of the most popular ways to format a decimal number in Java. Similar to previous examples, we’ll write a helper method: public static double withDecimalFormatLocal(double value) { DecimalFormat df = (DecimalFormat) NumberFormat.getNumberInstance(Locale.getDefault()); return new Double(df.format(value)); } Our type of formatting will get the default setting for a given localization.
GeeksforGeeks
geeksforgeeks.org › java › numberformat-class-java
NumberFormat Class in Java - GeeksforGeeks
January 23, 2026 - NumberFormat is an abstract class used to format numbers into locale-specific strings and to parse formatted strings back into numbers. It supports multiple locales, making it ideal for internationalized Java applications.
Scijava
javadoc.scijava.org › Java7 › java › text › class-use › NumberFormat.html
Uses of Class java.text.NumberFormat (Java Platform SE 7 )
Submit a bug or feature For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
TutorialsPoint
tutorialspoint.com › java_i18n › java_i18n_numberformat.htm
Java Internationalization - NumberFormat Class
import java.text.NumberFormat; import java.util.Locale; public class I18NTester { public static void main(String[] args) { Locale enLocale = new Locale("en", "US"); Locale daLocale = new Locale("da", "DK"); NumberFormat numberFormat = NumberFormat.getInstance(daLocale); System.out.println(numberFormat.format(100.76)); numberFormat = NumberFormat.getInstance(enLocale); System.out.println(numberFormat.format(100.76)); } }
Code with Mosh
forum.codewithmosh.com › java
FormattingNumbers - Java - Code with Mosh Forum
September 5, 2022 - I was trying to do some hands-on formatting numbers. my code: NumberFormat currency= NumberFormat.getCurrencyInstance(); String res= currency.format(1234567.891); System.out.println(res); output: ? 1,234,567.89 I …
Gwtproject
gwtproject.org › javadoc › latest › com › google › gwt › i18n › client › NumberFormat.html
NumberFormat (GWT Javadoc)
A NumberFormat pattern contains a postive and negative subpattern separated by a semicolon, such as "#,##0.00;(#,##0.00)". Each subpattern has a prefix, a numeric part, and a suffix. If there is no explicit negative subpattern, the negative subpattern is the localized minus sign prefixed to ...
GeeksforGeeks
geeksforgeeks.org › java › numberformat-getcompactnumberinstance-method-in-java-with-examples
NumberFormat getCompactNumberInstance() Method in Java with Examples - GeeksforGeeks
July 23, 2025 - NumberFormat helps you to format and parse numbers for any locale. Your code can be completely independent of the locale conventions for decimal points, thousands-separators, or even the particular decimal digits used, or whether the number ...
Mpg
resources.mpi-inf.mpg.de › d5 › teaching › ss05 › is05 › javadoc › java › text › NumberFormat.html
java.text Class NumberFormat
NumberFormat is the abstract base class for all number formats. This class provides the interface for formatting and parsing numbers.
Oreate AI
oreateai.com › blog › unpacking-the-dl-number-format-a-developers-guide-to-precision › 84fe710a72fc00df6ad2f40245ea541f
Unpacking the DL Number Format: A Developer's Guide to Precision - Oreate AI Blog
February 17, 2026 - At its heart, the concept revolves around the NumberFormat class, a powerful tool borrowed from Java's rich text processing capabilities and integrated into .NET. Think of it as a sophisticated translator for numbers.
Towson
tigerweb.towson.edu › aconover › JavaExamples › Formatting › NumberFormatting.html
NumberFormatting.java
23 NumberFormat ni1 = NumberFormat.getNumberInstance(); 24 NumberFormat ni2 = NumberFormat.getNumberInstance(Locale.GERMANY); 25 NumberFormat ci1 = NumberFormat.getCurrencyInstance(); 26 NumberFormat ci2 = NumberFormat.getCurrencyInstance(Locale.GERMANY); 27 28 // Some Sample Data 29 double amt1 = 1234.5; 30 double amt2 = .43345343; 31 32 // Convert numbers to strings of the traditional US format 33 String amt1String = ni1.format(amt1); 34 String amt2String = ni1.format(amt2); 35 String amt3String = ci1.format(amt1); 36 String amt4String = ci1.format(amt2); 37 38 // Display the formatted strings.
Top answer 1 of 3
8
If you want to specify how your numbers are formatted, then you must use the DecimalFormat constructor. If you want "the way most numbers are represented in my current locale", then use the default instance of NumberFormat.
2 of 3
3
I had the same issue concerning locale. You can create a DecimalFormat object for a US locale by instantiating a NumberFormat and then casting it to a DecimalFormat. This is what Oracle says:
The preceding example created a DecimalFormat object for the default Locale. If you want a DecimalFormat object for a nondefault Locale, you instantiate a NumberFormat and then cast it to DecimalFormat. Here's an example:
NumberFormat nf = NumberFormat.getNumberInstance(loc);
DecimalFormat df = (DecimalFormat)nf;
df.applyPattern(pattern);
String output = df.format(value);
System.out.println(pattern + " " + output + " " + loc.toString());
https://docs.oracle.com/javase/tutorial/i18n/format/decimalFormat.html
Microsoft Learn
learn.microsoft.com › en-us › dotnet › api › java.text.numberformat
NumberFormat Class (Java.Text) | Microsoft Learn
NumberFormat is the abstract base class for all number formats. This class provides the interface for formatting and parsing numbers.
University of Auckland
cs.auckland.ac.nz › references › java › java1.5 › tutorial › i18n › format › numberFormat.html
Using Predefined Formats (The Java™ Tutorials > Internationalization > Formatting)
By invoking the methods provided by the NumberFormat class, you can format numbers, currencies, and percentages according to Locale.
Oracle
docs.oracle.com › en › java › javase › 17 › docs › api › java.base › java › text › NumberFormat.html
NumberFormat (Java SE 17 & JDK 17)
January 20, 2026 - The default implementation provides rounding modes defined in RoundingMode for formatting numbers. It uses the round half-even algorithm. To change the rounding mode use setRoundingMode. The NumberFormat returned by the static factory methods is configured to round floating point numbers using half-even rounding (see RoundingMode.HALF_EVEN) for formatting.
Top answer 1 of 4
3
Use DecimalFormat()
DecimalFormat df2 = new DecimalFormat( "#,###,###,##0.00" );
double d = 100.2397;
double d1 = new Double(df2.format(d)).doubleValue();
Output - d1 will be 100.24
2 of 4
3
You need to use a number formatter as shown in the example below:
NumberFormat myFormatter = new DecimalFormat("#.###");
double myNumber = 1234.5632;
String formattedNumber = myFormatter.format(myNumber);
and formattedNumber will be equal to "1234.563"
Top answer 1 of 9
125
From this thread, there are different ways to do this:
double r = 5.1234;
System.out.println(r); // r is 5.1234
int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);
// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();
System.out.println(r); // r is 5.12
f = (float) (Math.round(n*100.0f)/100.0f);
DecimalFormat df2 = new DecimalFormat( "#,###,###,##0.00" );
double dd = 100.2397;
double dd2dec = new Double(df2.format(dd)).doubleValue();
// The value of dd2dec will be 100.24
The DecimalFormat() seems to be the most dynamic way to do it, and it is also very easy to understand when reading others code.
2 of 9
74
You and String.format() will be new best friends!
https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html#syntax
String.format("%.2f", (double)value);
Google Groups
groups.google.com › g › google-web-toolkit › c › _ixwEOOXgnM
java.text.NumberFormat not found
On May 19, 8:27 pm, corbinlc <corbi...@gmail.com> wrote: > From this discussion, it sounds like java.txt.NumberFormat was to be > put in 1.4.
TutorialsPoint
tutorialspoint.com › numberformat-class-in-java
NumberFormat class in Java
January 2, 2020 - Let us now see an example to implement the NumberFormat class − ... import java.text.NumberFormat; import java.util.Locale; public class Demo { public static void main(String[] args) { NumberFormat n = NumberFormat.getCurrencyInstance(Locale.FRANCE); double points = 2.15; double totalPoints = points * 1000; System.out.println(n.format(points)); System.out.println(n.format(totalPoints)); } }