Clarifies the distinction between expiration of the head of DelayQueue and how it relates to `poll`, `take`, and `peek`. See discussion on https://bugs.openjdk.org/browse/JDK-8297605
@DougLea If possible, please weigh in on whether this is in line with your thoughts on the matter. ------------- Commit messages: - JDK-8297605 DelayQueue javadoc is confusing Changes: https://git.openjdk.org/jdk/pull/12727/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12727&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8297605 Stats: 14 lines in 1 file changed: 1 ins; 1 del; 12 mod Patch: https://git.openjdk.org/jdk/pull/12727.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12727/head:pull/12727 PR: https://git.openjdk.org/jdk/pull/12727
