RFR: JDK-8155039 Simplify code to setup SSLContextImpl and TrustManagerFactoryImpl

[Weijun Wang]

On Mon, 18 Jul 2022 17:53:56 GMT, Mark Powers <duke at openjdk.org> wrote:

> https://bugs.openjdk.org/browse/JDK-8155039

I'm not sure if this is worth doing. It looks like after the code change each of the 2 constructors is only used once by one of the 2 new `privilegedGetFileInputStream` methods, and then each new method is only used once in JSSE.

Also, the `SecurityManager` API including these `doPrivileged` calls were deprecated for removal in JDK 17. I doubt spending more time tuning them makes us any good.

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PR: https://git.openjdk.org/jdk/pull/9542