See: Description
| Interface | Description | 
|---|---|
| DateParser | DateParser is the "missing" interface for the parsing methods of
  DateFormat. | 
| DatePrinter | DatePrinter is the "missing" interface for the format methods of 
  DateFormat. | 
| Class | Description | 
|---|---|
| DateFormatUtils | Date and time formatting utilities and constants. | 
| DateUtils | |
| DurationFormatUtils | Duration formatting utilities and constants. | 
| FastDateFormat | FastDateFormat is a fast and thread-safe version of
  SimpleDateFormat. | 
| FastDateParser | FastDateParser is a fast and thread-safe version of
  SimpleDateFormat. | 
| FastDatePrinter | FastDatePrinter is a fast and thread-safe version of
  SimpleDateFormat. | 
| StopWatch | StopWatchprovides a convenient API for timings. | 
Provides classes and methods to work with dates and durations.
 These classes are immutable (and therefore thread-safe) apart from StopWatch.
The time package contains some basic utilities for manipulating time (a delorean, police box and grandfather clock?).
 These include a StopWatch for simple performance measurements and an optimised FastDateFormat class.
New in Lang 2.1 is the DurationFormatUtils class, which provides various methods for formatting durations.
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