В следующей таблице перечислены некоторые из преобразователей и флагов, которые используются в программе образца, TestFormat.java, который следует за таблицей.
Преобразователи и флаги, используемые в TestFormat.java Конвертор флага Объяснение
d           A decimal integer.
f           A float.
n           A new line character appropriate to the platform running the application. You should always use %n, rather than \n.
tB           A date & time conversion—locale-specific full name of month.
td, te           A date & time conversion—2-digit day of month. td has leading zeroes as needed, te does not.
ty, tY           A date & time conversion—ty = 2-digit year, tY = 4-digit year.
tl           A date & time conversion—hour in 12-hour clock.
tM           A date & time conversion—minutes in 2 digits, with leading zeroes as necessary.
tp           A date & time conversion—locale-specific am/pm (lower case).
tm           A date & time conversion—months in 2 digits, with leading zeroes as necessary.
tD           A date & time conversion—date as %tm%td%ty
      08     Eight characters in width, with leading zeroes as necessary.
      +     Includes sign, whether positive or negative.
      ,     Includes locale-specific grouping characters.
      -     Left-justified..
      .3     Three places after decimal point.
      10.3     Ten characters in width, right justified, with three places after decimal point.

import java.util.Calendar;
import java.util.Locale;

public class TestFormat {
    
    public static void main(String[] args) {
      long n = 461012;
      System.out.format("%d%n", n);      //  -->  "461012"
      System.out.format("%08d%n", n);    //  -->  "00461012"
      System.out.format("%+8d%n", n);    //  -->  " +461012"
      System.out.format("%,8d%n", n);    // -->  " 461,012"
      System.out.format("%+,8d%n%n", n); //  -->  "+461,012"
      
      double pi = Math.PI;

      System.out.format("%f%n", pi);       // -->  "3.141593"
      System.out.format("%.3f%n", pi);     // -->  "3.142"
      System.out.format("%10.3f%n", pi);   // -->  "     3.142"
      System.out.format("%-10.3f%n", pi);  // -->  "3.142"
      System.out.format(Locale.FRANCE,
                        "%-10.4f%n%n", pi); // -->  "3,1416"

      Calendar c = Calendar.getInstance();
      System.out.format("%tB %te, %tY%n", c, c, c); // -->  "May 29, 2006"

      System.out.format("%tl:%tM %tp%n", c, c, c);  // -->  "2:34 am"

      System.out.format("%tD%n", c);    // -->  "05/29/06"
    }
}