1 ÏÏÏimport java.text.*;
2 ÏÏÏimport java.util.Locale;
3 ÏÏÏimport java.util.Scanner;
4
5 ÏÕÖ×public class PlayWithNumberFormatK
6 Ïϧ{
7 ÏϧÏÞßàpublic static void main (String [] args)
8 ÏϧÏϧ{
9 ÏϧÏϨ¹íÏNumberFormat myNumberFormat; // object declaration
10 ÏϧÏϨ¹íÏdouble value;
11 ÏϧÏϨ¹íÏString outputForm;
12 ÏϧÏϨ¹íÏScanner myScanner;
13 ÏϧÏϧ
14 ÏϧÏϧ
15 ÏϧÏϨ¹¹ÏmyScanner = new Scanner(System.in);
16 ÏϧÏϨ¹¹Ïvalue = myScanner.nextDouble();
17 ÏϧÏϧ

18 ÏϧÏϨ¹¹ÏSystem.out.println (" unformatted value: " + value);
19 ÏϧÏϧ
20 ÏϧÏϨ¹¹ÏmyNumberFormat = NumberFormat.getInstance(); // get one
21 ÏϧÏϧ
22 ÏϧÏϧ // things you can set with a number formatter
23 ÏϧÏϨ¹¹ÏmyNumberFormat.setMinimumIntegerDigits(10);
24 ÏϧÏϨ¹¹ÏmyNumberFormat.setMaximumIntegerDigits(6);
25 ÏϧÏϨ¹¹ÏmyNumberFormat.setGroupingUsed(true); // commas or not
26 ÏϧÏϧ
27 ÏϧÏϧ // apply settings & print
28 ÏϧÏϧ // System.out.println (myNumberFormat.format (value));
29 ÏϧÏϧ
30 ÏϧÏϧ // what you are printing is a String so this is better
31 ÏϧÏϨ¹¹ÏoutputForm = myNumberFormat.format (value);
32 ÏϧÏϨ¹¹ÏSystem.out.println ( " formatted value 1: " + outputForm);
33 ÏϧÏϧ
34 ÏϧÏϧ // make some changes in the format
35 ÏϧÏϨ¹¹ÏmyNumberFormat.setMaximumFractionDigits(5);
36 ÏϧÏϨ¹¹ÏmyNumberFormat.setMaximumIntegerDigits(3);
37 ÏϧÏϨ¹¹ÏmyNumberFormat.setGroupingUsed(false);
38 ÏϧÏϧ
39 ÏϧÏϨ¹¹ÏoutputForm = myNumberFormat.format (value);
40 ÏϧÏϨ¹¹ÏSystem.out.println ( " formatted value 2: " + outputForm);
41 ÏϧÏϧ
42 ÏϧÏϧ // change format to money
43 ÏϧÏϨ¹¹ÏmyNumberFormat = NumberFormat.getCurrencyInstance();
44 ÏϧÏϨ¹¹ÏoutputForm = myNumberFormat.format (value);
45 ÏϧÏϨ¹¹ÏSystem.out.println ( " formatted value 3: " + outputForm);
46 ÏϧÏϧ
47 ÏϧÏϧ // change money format to English
48 ÏϧÏϨ¹¹ÏmyNumberFormat = NumberFormat.getCurrencyInstance(Locale.UK);
49 ÏϧÏϨ¹¹ÏoutputForm = myNumberFormat.format (value);
50 ÏϧÏϨ¹¹ÏSystem.out.println ( " formatted value 4: " + outputForm);
51 ÏϧÏϧ
52 ÏϧÏϧ
53 ÏϧÏϧ // change format to a percent
54 ÏϧÏϨ¹¹ÏmyNumberFormat = NumberFormat.getPercentInstance();
55 ÏϧÏϨ¹¹ÏoutputForm = myNumberFormat.format (value);
56 ÏϧÏϨ¹¹ÏSystem.out.println ( " formatted value 5: " + outputForm);
57 ÏϧÏÏ©}
58 ÏÏ©}