git: openjdk/jdk: master: 8364317: Explicitly document some assumptions of StringUTF16

[Chen Liang]

Changeset: fe09e93b
Branch: master
Author:    Chen Liang <liach at openjdk.org>
Date:      2025-07-31 18:26:28 +0000
URL:       https://git.openjdk.org/jdk/commit/fe09e93b8fc3081c944f3824fdaa55cc17e377a8

8364317: Explicitly document some assumptions of StringUTF16

Reviewed-by: rgiulietti, rriggs, vyazici

! src/java.base/share/classes/java/lang/StringUTF16.java