git: openjdk/jdk: 8304945: StringBuilder and StringBuffer should implement Appendable explicitly

[Joe Darcy]

Changeset: df819cfa
Author:    Joe Darcy <darcy at openjdk.org>
Date:      2023-04-03 17:19:44 +0000
URL:       https://git.openjdk.org/jdk/commit/df819cfa5a0330205fed89923df6dd5f7d5ffb45

8304945: StringBuilder and StringBuffer should implement Appendable explicitly

Reviewed-by: alanb, rriggs

! src/java.base/share/classes/java/lang/StringBuffer.java
! src/java.base/share/classes/java/lang/StringBuilder.java