java.text.spi

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1. Getting an Instance of NumberFormat

NumberFormat numberFormat = NumberFormat.getInstance();

2. Setting the Currency

NumberFormat numberFormat = NumberFormat.getCurrencyInstance();
numberFormat.setCurrency(Currency.getInstance("USD"));

3. Formatting a Number as Currency

double amount = 1234.56;
String formattedAmount = numberFormat.format(amount); // "$1,234.56"

4. Parsing a Currency String

String currencyString = "$1,234.56";
Number parsedAmount = numberFormat.parse(currencyString); // 1234.56

5. Getting an Instance of DateFormat

DateFormat dateFormat = DateFormat.getInstance();

6. Setting the Date Format

DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.FULL);

7. Formatting a Date

Date date = new Date();
String formattedDate = dateFormat.format(date); // "Friday, April 22, 2023"

8. Parsing a Date String

String dateString = "2023-04-22";
Date parsedDate = dateFormat.parse(dateString); // Thu Apr 22 00:00:00 CST 2023

9. Getting an Instance of DecimalFormat

DecimalFormat decimalFormat = new DecimalFormat();

10. Setting the Decimal Format

DecimalFormat decimalFormat = new DecimalFormat("#.##");

11. Formatting a Number

double value = 123.456;
String formattedValue = decimalFormat.format(value); // "123.46"

12. Parsing a Number String

String numberString = "123.456";
Number parsedValue = decimalFormat.parse(numberString); // 123.456

13. Getting an Instance of MessageFormat

MessageFormat messageFormat = new MessageFormat("{0} is {1} years old.");

14. Setting the Arguments

Object[] arguments = {"John", 30};

15. Formatting a Message

String formattedMessage = messageFormat.format(arguments); // "John is 30 years old."

16. Parsing a Message

String message = "John is 30 years old.";
Object[] parsedArguments = messageFormat.parse(message); // {"John", 30}

17. Getting an Instance of ChoiceFormat

ChoiceFormat choiceFormat = new ChoiceFormat(
    "0#no files | 1#one file | 2#two files | 1<{0} files");

18. Selecting the Format

int numberFiles = 5;
String formattedMessage = choiceFormat.format(numberFiles); // "5 files"

19. Parsing a Formatted Message

String message = "5 files";
Number parsedNumber = choiceFormat.parse(message); // 5

20. Getting an Instance of Collator

Collator collator = Collator.getInstance();

21. Setting the Locale

Locale locale = Locale.GERMAN;
collator = Collator.getInstance(locale);

22. Comparing Strings

String string1 = "Apple";
String string2 = "Orange";
int result = collator.compare(string1, string2); // -1

23. Getting an Instance of Normalizer

Normalizer normalizer = Normalizer.getInstance();

24. Normalizing a String

String string = "Türkiye";
String normalizedString = normalizer.normalize(string); // "Turkiye"

25. Getting an Instance of BreakIterator

BreakIterator breakIterator = BreakIterator.getWordInstance();

26. Setting the Text

String text = "Hello, world!";
breakIterator.setText(text);

27. Getting the Boundaries

int boundary = breakIterator.first();
while (boundary != BreakIterator.DONE) {
  System.out.println(text.substring(boundary, breakIterator.next()));
  boundary = breakIterator.next();
}

28. Getting an Instance of CharacterIterator

CharacterIterator characterIterator = new StringCharacterIterator("Hello, world!");

29. Navigating the Characters

char character = characterIterator.current();
while (character != CharacterIterator.DONE) {
  System.out.print(character);
  character = characterIterator.next();
}

30. Getting an Instance of Locale

Locale locale = Locale.getDefault();

31. Getting the Language

String language = locale.getLanguage(); // "en"

32. Getting the Country

String country = locale.getCountry(); // "US"

33. Getting an Instance of Currency

Currency currency = Currency.getInstance("USD");

34. Getting the Currency Code

String currencyCode = currency.getCurrencyCode(); // "USD"

35. Getting an Instance of TimeZone

TimeZone timeZone = TimeZone.getDefault();

36. Getting the Time Zone ID

String timeZoneID = timeZone.getID(); // "America/Los_Angeles"

37. Getting an Instance of SimpleDateFormat

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");

38. Setting the Time Zone

simpleDateFormat.setTimeZone(timeZone);

39. Formatting a Date

Date date = new Date();
String formattedDate = simpleDateFormat.format(date); // "2023-04-22"

40. Parsing a Date String

String dateString = "2023-04-22";
Date parsedDate = simpleDateFormat.parse(dateString); // Thu Apr 22 00:00:00 CST 2023

41. Getting an Instance of DecimalFormatSymbols

DecimalFormatSymbols decimalFormatSymbols = new DecimalFormatSymbols();

42. Getting the Decimal Separator

char decimalSeparator = decimalFormatSymbols.getDecimalSeparator(); // '.'

43. Getting the Currency Symbol

String currencySymbol = decimalFormatSymbols.getCurrencySymbol(); // "$"

44. Getting an Instance of MessageFormat

MessageFormat messageFormat = MessageFormat.getInstance();

45. Setting the Pattern

messageFormat.setPattern("{0} is {1} years old.");

46. Setting the Arguments

Object[] arguments = {"John", 30};

47. Formatting a Message

String formattedMessage = messageFormat.format(arguments); // "John is 30 years old."

48. Parsing a Message

String message = "John is 30 years old.";
Object[] parsedArguments = messageFormat.parse(message); // {"John", 30}

49. Getting an Instance of MessageFormat

MessageFormat messageFormat = new MessageFormat("{0} is {1} years old.");

50. Getting the Available Locales

Locale[] availableLocales = MessageFormat.getAvailableLocales();