RFR: JDK-8282046: Create a regression test for JDK-8000326 [v3]

[Alexey Ivanov]

On Fri, 11 Mar 2022 14:38:28 GMT, Srinivas Mandalika <smandalika at openjdk.org> wrote:

>> Create a regression test for CCC8000326
>> 
>> Issue is identified by [JDK-8000326](https://bugs.openjdk.java.net/browse/JDK-8000326), which identifies that after focus moves into JMenuBar, whose focus traversal key is disabled by default, it never moves to other focusable component.
>>  
>> By default, pressing the Tab key does not transfer focus from a JMenuBar which is added to a container together with other Swing components, because the focusTraversalKeysEnabled property of JMenuBar is set to false. To resolve this, you should call the JMenuBar.setFocusTraversalKeysEnabled(true) method.
>>  
>> The test verifies focus traversal for the above described scenario.
>> This review is for migrating tests from a closed test suite to open.
>
> Srinivas Mandalika has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Added @bug keyword

Changes requested by aivanov (Reviewer).

test/jdk/java/awt/Focus/8000326/SetFocusTraversalKeysEnabledTest.java line 64:

> 62:                 SwingUtilities.invokeAndWait(() -> {
> 63:                     currentFocusOwner = jFrame.getFocusOwner();
> 64:                 });

When there's only one statement in the lambda statement, it can be replaced with expression lambda:
Suggestion:

                SwingUtilities.invokeAndWait(() ->
                        currentFocusOwner = jFrame.getFocusOwner());

Just like you did for `createGUI()`.

This also applies to `jFrame.dispose()` statement.

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PR: https://git.openjdk.java.net/jdk/pull/7512