suppress errorprone [NarrowingCompoundAssignment] warning

8204375: Add TimeUnit#convert(Duration)

use lock object in sample code snippet

Redo @link and @linkplain; one @link was pointing to the wrong poll method

very small readability improvement

use symbolic scale names

whitespace

Cache toSeconds conversion constants

Minor coding tweaks

Implement 8141452: Convert between TimeUnit and ChronoUnit

whitespace

add missing @since 1.6

javadoc: first sentence - third person

<tt> -> {@code

Update Creative Commons license URL in legal notices

improve sample code

Remove unnecessary Tiger "index" value; serialization compatibility doesn't require it.

Avoid "abstract" to ensure signature compatibility

whitespace

Clarify timeout param

Copyedit pass

Add overflow possibility to @returns entries for toSeconds(), toMinutes(), and toHours()

Added  minutes, hours, days support

TimeUnit now an enum

Headers reference Creative Commons

Spellcheck

Use readResolve to deserialize

Removed non-standard tags and misc javadoc cleanup

Saturate conversions

Fixes to minor errors found by DocCheck

More javadoc link fixes

Added missing javadoc tags; minor reformatting

re-check-in initial implementations