RFR: 8278263: Remove redundant synchronized from URLStreamHandler.openConnection methods

[Alan Bateman]

On Tue, 25 Jan 2022 21:01:42 GMT, Florent Guillaume <duke at openjdk.java.net> wrote:

> In theory a subclass overloading using a non-synchronized `openConnection(URL u, Proxy p)` could have relied on `openConnection(URL u)` delegating to it and having been synchronized. So maybe this requires a small CSR?

The changes are to the JDK internal classes that implement the file and mailto protocol handlers. Are you thinking about code that extends the sun.* classes or some other scenario?

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PR: https://git.openjdk.java.net/jdk/pull/6373