RFR: JDK-8302323 Add repeat methods to StringBuilder/StringBuffer [v7]

[Jim Laskey]

On Thu, 2 Mar 2023 20:19:01 GMT, Jim Laskey <jlaskey at openjdk.org> wrote:

>> Add the ability to repeatedly append char and CharSequence data to StringBuilder/StringBuffer.
>
> Jim Laskey has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add snippet

I agree. Will add IAE tests for bad code points and create as second set of tests for StringBuffer.

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PR: https://git.openjdk.org/jdk/pull/12728