`Console` class now has a couple of internal subclasses within `java.io` package. It should be `sealed` and subclasses be declared in the `permits` clause.
------------- Commit messages: - tidying up - sealed Console, impl/if separation Changes: https://git.openjdk.org/jdk/pull/11615/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11615&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8298416 Stats: 625 lines in 2 files changed: 366 ins; 237 del; 22 mod Patch: https://git.openjdk.org/jdk/pull/11615.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11615/head:pull/11615 PR: https://git.openjdk.org/jdk/pull/11615
