This PR fixes `java.util.Deque`'s specification to name `peekFirst()` as an equivalent to Stack's `peek()` method since both of them don't throw when a collection is empty. This is not the case with the current `getFirst()` method.
Please let me know if I have to fix something in the PR. Will appreciate your guidance since this is my first PR to JDK. ------------- Commit messages: - 8337205: Set Deque's peekFirst() method as equivalent to Stack's peek() method in the doc Changes: https://git.openjdk.org/jdk/pull/20363/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20363&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8337205 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/20363.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20363/head:pull/20363 PR: https://git.openjdk.org/jdk/pull/20363
