public class

PeriodFormatterBuilder

extends Object
java.lang.Object
   ↳ org.joda.time.format.PeriodFormatterBuilder

Class Overview

Factory that creates complex instances of PeriodFormatter via method calls.

Period formatting is performed by the PeriodFormatter class. Three classes provide factory methods to create formatters, and this is one. The others are PeriodFormat and ISOPeriodFormat.

PeriodFormatterBuilder is used for constructing formatters which are then used to print or parse. The formatters are built by appending specific fields or other formatters to an instance of this builder.

For example, a formatter that prints years and months, like "15 years and 8 months", can be constructed as follows: 

 PeriodFormatter yearsAndMonths = new PeriodFormatterBuilder()
     .printZeroAlways()
     .appendYears()
     .appendSuffix(" year", " years")
     .appendSeparator(" and ")
     .printZeroRarely()
     .appendMonths()
     .appendSuffix(" month", " months")
     .toFormatter();

PeriodFormatterBuilder itself is mutable and not thread-safe, but the formatters that it builds are thread-safe and immutable.

See Also

Summary

Public Constructors
PeriodFormatterBuilder()
Public Methods
PeriodFormatterBuilder append(PeriodFormatter formatter)
Appends another formatter.
PeriodFormatterBuilder append(PeriodPrinter printer, PeriodParser parser)
Appends a printer parser pair.
PeriodFormatterBuilder appendDays()
Instruct the printer to emit an integer days field, if supported.
PeriodFormatterBuilder appendHours()
Instruct the printer to emit an integer hours field, if supported.
PeriodFormatterBuilder appendLiteral(String text)
Instructs the printer to emit specific text, and the parser to expect it.
PeriodFormatterBuilder appendMillis()
Instruct the printer to emit an integer millis field, if supported.
PeriodFormatterBuilder appendMillis3Digit()
Instruct the printer to emit an integer millis field, if supported.
PeriodFormatterBuilder appendMinutes()
Instruct the printer to emit an integer minutes field, if supported.
PeriodFormatterBuilder appendMonths()
Instruct the printer to emit an integer months field, if supported.
PeriodFormatterBuilder appendPrefix(String singularText, String pluralText)
Append a field prefix which applies only to the next appended field.
PeriodFormatterBuilder appendPrefix(String text)
Append a field prefix which applies only to the next appended field.
PeriodFormatterBuilder appendSeconds()
Instruct the printer to emit an integer seconds field, if supported.
PeriodFormatterBuilder appendSecondsWithMillis()
Instruct the printer to emit a combined seconds and millis field, if supported.
PeriodFormatterBuilder appendSecondsWithOptionalMillis()
Instruct the printer to emit a combined seconds and millis field, if supported.
PeriodFormatterBuilder appendSeparator(String text, String finalText)
Append a separator, which is output if fields are printed both before and after the separator.
PeriodFormatterBuilder appendSeparator(String text, String finalText, String[] variants)
Append a separator, which is output if fields are printed both before and after the separator.
PeriodFormatterBuilder appendSeparator(String text)
Append a separator, which is output if fields are printed both before and after the separator.
PeriodFormatterBuilder appendSeparatorIfFieldsAfter(String text)
Append a separator, which is output only if fields are printed after the separator.
PeriodFormatterBuilder appendSeparatorIfFieldsBefore(String text)
Append a separator, which is output only if fields are printed before the separator.
PeriodFormatterBuilder appendSuffix(String text)
Append a field suffix which applies only to the last appended field.
PeriodFormatterBuilder appendSuffix(String singularText, String pluralText)
Append a field suffix which applies only to the last appended field.
PeriodFormatterBuilder appendWeeks()
Instruct the printer to emit an integer weeks field, if supported.
PeriodFormatterBuilder appendYears()
Instruct the printer to emit an integer years field, if supported.
void clear()
Clears out all the appended elements, allowing this builder to be reused.
PeriodFormatterBuilder maximumParsedDigits(int maxDigits)
Set the maximum digits parsed for the next and following appended fields.
PeriodFormatterBuilder minimumPrintedDigits(int minDigits)
Set the minimum digits printed for the next and following appended fields.
PeriodFormatterBuilder printZeroAlways()
Always print zero values for the next and following appended fields, even if the period doesn't support it.
PeriodFormatterBuilder printZeroIfSupported()
Print zero values for the next and following appened fields only if the period supports it.
PeriodFormatterBuilder printZeroNever()
Never print zero values for the next and following appended fields, unless no fields would be printed.
PeriodFormatterBuilder printZeroRarelyFirst()
Never print zero values for the next and following appended fields, unless no fields would be printed.
PeriodFormatterBuilder printZeroRarelyLast()
Never print zero values for the next and following appended fields, unless no fields would be printed.
PeriodFormatterBuilder rejectSignedValues(boolean v)
Reject signed values when parsing the next and following appended fields.
PeriodFormatter toFormatter()
Constructs a PeriodFormatter using all the appended elements.
PeriodParser toParser()
Internal method to create a PeriodParser instance using all the appended elements.
PeriodPrinter toPrinter()
Internal method to create a PeriodPrinter instance using all the appended elements.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public PeriodFormatterBuilder ()

Public Methods

public PeriodFormatterBuilder append (PeriodFormatter formatter)

Appends another formatter.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder append (PeriodPrinter printer, PeriodParser parser)

Appends a printer parser pair.

Either the printer or the parser may be null, in which case the builder will be unable to produce a parser or printer repectively.

Parameters
printer appends a printer to the builder, null if printing is not supported
parser appends a parser to the builder, null if parsing is not supported
Returns
  • this PeriodFormatterBuilder
Throws
IllegalArgumentException if both the printer and parser are null

public PeriodFormatterBuilder appendDays ()

Instruct the printer to emit an integer days field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendHours ()

Instruct the printer to emit an integer hours field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendLiteral (String text)

Instructs the printer to emit specific text, and the parser to expect it. The parser is case-insensitive.

Returns
  • this PeriodFormatterBuilder
Throws
IllegalArgumentException if text is null

public PeriodFormatterBuilder appendMillis ()

Instruct the printer to emit an integer millis field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendMillis3Digit ()

Instruct the printer to emit an integer millis field, if supported.

The number of arsed digits can be controlled using maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendMinutes ()

Instruct the printer to emit an integer minutes field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendMonths ()

Instruct the printer to emit an integer months field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendPrefix (String singularText, String pluralText)

Append a field prefix which applies only to the next appended field. If the field is not printed, neither is the prefix.

During parsing, the singular and plural versions are accepted whether or not the actual value matches plurality.

Parameters
singularText text to print if field value is one
pluralText text to print if field value is not one
Returns
  • this PeriodFormatterBuilder
See Also

public PeriodFormatterBuilder appendPrefix (String text)

Append a field prefix which applies only to the next appended field. If the field is not printed, neither is the prefix.

Parameters
text text to print before field only if field is printed
Returns
  • this PeriodFormatterBuilder
See Also

public PeriodFormatterBuilder appendSeconds ()

Instruct the printer to emit an integer seconds field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendSecondsWithMillis ()

Instruct the printer to emit a combined seconds and millis field, if supported. The millis will overflow into the seconds if necessary. The millis are always output.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendSecondsWithOptionalMillis ()

Instruct the printer to emit a combined seconds and millis field, if supported. The millis will overflow into the seconds if necessary. The millis are only output if non-zero.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendSeparator (String text, String finalText)

Append a separator, which is output if fields are printed both before and after the separator.

This method changes the separator depending on whether it is the last separator to be output.

For example, builder.appendDays().appendSeparator(",", "&").appendHours().appendSeparator(",", "&").appendMinutes() will output '1,2&3' if all three fields are output, '1&2' if two fields are output and '1' if just one field is output.

The text will be parsed case-insensitively.

Note: appending a separator discontinues any further work on the latest appended field.

Parameters
text the text to use as a separator
finalText the text used used if this is the final separator to be printed
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if this separator follows a previous one

public PeriodFormatterBuilder appendSeparator (String text, String finalText, String[] variants)

Append a separator, which is output if fields are printed both before and after the separator.

This method changes the separator depending on whether it is the last separator to be output.

For example, builder.appendDays().appendSeparator(",", "&").appendHours().appendSeparator(",", "&").appendMinutes() will output '1,2&3' if all three fields are output, '1&2' if two fields are output and '1' if just one field is output.

The text will be parsed case-insensitively.

Note: appending a separator discontinues any further work on the latest appended field.

Parameters
text the text to use as a separator
finalText the text used used if this is the final separator to be printed
variants set of text values which are also acceptable when parsed
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if this separator follows a previous one

public PeriodFormatterBuilder appendSeparator (String text)

Append a separator, which is output if fields are printed both before and after the separator.

For example, builder.appendDays().appendSeparator(",").appendHours() will only output the comma if both the days and hours fields are output.

The text will be parsed case-insensitively.

Note: appending a separator discontinues any further work on the latest appended field.

Parameters
text the text to use as a separator
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if this separator follows a previous one

public PeriodFormatterBuilder appendSeparatorIfFieldsAfter (String text)

Append a separator, which is output only if fields are printed after the separator.

For example, builder.appendDays().appendSeparatorIfFieldsAfter(",").appendHours() will only output the comma if the hours fields is output.

The text will be parsed case-insensitively.

Note: appending a separator discontinues any further work on the latest appended field.

Parameters
text the text to use as a separator
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if this separator follows a previous one

public PeriodFormatterBuilder appendSeparatorIfFieldsBefore (String text)

Append a separator, which is output only if fields are printed before the separator.

For example, builder.appendDays().appendSeparatorIfFieldsBefore(",").appendHours() will only output the comma if the days fields is output.

The text will be parsed case-insensitively.

Note: appending a separator discontinues any further work on the latest appended field.

Parameters
text the text to use as a separator
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if this separator follows a previous one

public PeriodFormatterBuilder appendSuffix (String text)

Append a field suffix which applies only to the last appended field. If the field is not printed, neither is the suffix.

Parameters
text text to print after field only if field is printed
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if no field exists to append to
See Also

public PeriodFormatterBuilder appendSuffix (String singularText, String pluralText)

Append a field suffix which applies only to the last appended field. If the field is not printed, neither is the suffix.

During parsing, the singular and plural versions are accepted whether or not the actual value matches plurality.

Parameters
singularText text to print if field value is one
pluralText text to print if field value is not one
Returns
  • this PeriodFormatterBuilder
Throws
IllegalStateException if no field exists to append to
See Also

public PeriodFormatterBuilder appendWeeks ()

Instruct the printer to emit an integer weeks field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder appendYears ()

Instruct the printer to emit an integer years field, if supported.

The number of printed and parsed digits can be controlled using minimumPrintedDigits(int) and maximumParsedDigits(int).

Returns
  • this PeriodFormatterBuilder

public void clear ()

Clears out all the appended elements, allowing this builder to be reused.

public PeriodFormatterBuilder maximumParsedDigits (int maxDigits)

Set the maximum digits parsed for the next and following appended fields. By default, the maximum digits parsed is ten.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder minimumPrintedDigits (int minDigits)

Set the minimum digits printed for the next and following appended fields. By default, the minimum digits printed is one. If the field value is zero, it is not printed unless a printZero rule is applied.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder printZeroAlways ()

Always print zero values for the next and following appended fields, even if the period doesn't support it. The parser requires values for fields that always print zero.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder printZeroIfSupported ()

Print zero values for the next and following appened fields only if the period supports it.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder printZeroNever ()

Never print zero values for the next and following appended fields, unless no fields would be printed. If no fields are printed, the printer forces the last "printZeroRarely" field to print a zero.

This field setting is the default.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder printZeroRarelyFirst ()

Never print zero values for the next and following appended fields, unless no fields would be printed. If no fields are printed, the printer forces the first "printZeroRarely" field to print a zero.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder printZeroRarelyLast ()

Never print zero values for the next and following appended fields, unless no fields would be printed. If no fields are printed, the printer forces the last "printZeroRarely" field to print a zero.

This field setting is the default.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatterBuilder rejectSignedValues (boolean v)

Reject signed values when parsing the next and following appended fields.

Returns
  • this PeriodFormatterBuilder

public PeriodFormatter toFormatter ()

Constructs a PeriodFormatter using all the appended elements.

This is the main method used by applications at the end of the build process to create a usable formatter.

Subsequent changes to this builder do not affect the returned formatter.

The returned formatter may not support both printing and parsing. The methods isPrinter() and isParser() will help you determine the state of the formatter.

Returns
  • the newly created formatter
Throws
IllegalStateException if the builder can produce neither a printer nor a parser

public PeriodParser toParser ()

Internal method to create a PeriodParser instance using all the appended elements.

Most applications will not use this method. If you want a printer in an application, call toFormatter() and just use the printing API.

Subsequent changes to this builder do not affect the returned parser.

Returns
  • the newly created parser, null if builder cannot create a parser

public PeriodPrinter toPrinter ()

Internal method to create a PeriodPrinter instance using all the appended elements.

Most applications will not use this method. If you want a printer in an application, call toFormatter() and just use the printing API.

Subsequent changes to this builder do not affect the returned printer.

Returns
  • the newly created printer, null if builder cannot create a printer