<Swing Dev> RFR: 8263472: Specification of JComponent::updateUI doesn't mention that the original implementaiton does nothing [v4]

[Prasanta Sadhukhan]

> It's unclear from the spec that the original implementation of the method JComponent.updateUI() does nothing which needs to be explicitly stated in the javadoc.

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Use @implNote

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2955/files
  - new: https://git.openjdk.java.net/jdk/pull/2955/files/a6484203..39c4a720

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2955&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2955&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2955.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2955/head:pull/2955

PR: https://git.openjdk.java.net/jdk/pull/2955