Updated code checks both non-null and instance of a class in java.desktop module classes. The checks and explicit casts could also be replaced with pattern matching for the instanceof operator. Similar cleanups 1. [JDK-8273484](https://bugs.openjdk.java.net/browse/JDK-8273484) java.naming 2. [JDK-8258422](https://bugs.openjdk.java.net/browse/JDK-8258422) java.base
------------- Commit messages: - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop - [PATCH] Cleanup unnecessary null comparison before instanceof check in java.desktop Changes: https://git.openjdk.java.net/jdk/pull/5482/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5482&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8274640 Stats: 543 lines in 122 files changed: 0 ins; 114 del; 429 mod Patch: https://git.openjdk.java.net/jdk/pull/5482.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5482/head:pull/5482 PR: https://git.openjdk.java.net/jdk/pull/5482
