This PR proposed to retire the class 'java.io.ExpiringCache'. The use of the class has been off by default since Java 16 but could be explicitly turned on by means of two System properties.
------------- Commit messages: - Remove warnings - Update copyright years - Retire ExpiringCache Changes: https://git.openjdk.org/jdk/pull/12167/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12167&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8300977 Stats: 446 lines in 6 files changed: 7 ins; 413 del; 26 mod Patch: https://git.openjdk.org/jdk/pull/12167.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/12167/head:pull/12167 PR: https://git.openjdk.org/jdk/pull/12167
