RFR: 8277463: JFileChooser with Metal L&F doesn't show non-canonical UNC path in - Look in [v3]

[Masanori Yano]

On Tue, 21 Dec 2021 05:28:17 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> I fixed the test as it was pointed out to me.
>
> Now it cannot be compiled due to "unreported exception java.lang.ClassNotFoundException; must be caught or declared to be thrown" from the setLookAndFeel(); Note that the new version still has a race, the invokeLater/setLookAndFeel can be executed later than the code in the showOpenDialog(), so the code in showOpenDialog may use the wrong L&F properties, can we move the showOpenDialog to the EDT as well?

Sorry, I've modified the test case. If showOpenDialog() is called on EDT, this test does not exit at judge button pressing. So I would to change createInstructionUI() to call on main thread. This method sets properties and event handlers before showing UI, so does not need call on EDT.

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PR: https://git.openjdk.java.net/jdk/pull/6796