RFR: 8306457: Classfile API components implementations should not be exposed

[Chen Liang]

On Wed, 19 Apr 2023 16:58:32 GMT, Chen Liang <liach at openjdk.org> wrote:

> The jdk.internal.classfile.components package's interfaces have implementations in their nested classes, which are implicitly public and exported with the package. They are now moved to the impl package to avoid unwanted exposures. Fixed a few minor javadoc issues in the interfaces as well.
> 
> In conflict with #13021; one needs updating if the other is merged.

@asotona Can you take a look at this proposal to move implementation records to the impl package since they shouldn't be public nested members of interfaces?

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PR Comment: https://git.openjdk.org/jdk/pull/13541#issuecomment-1546660654