RFR: 8296083: javax/swing/JTree/6263446/bug6263446.java fails intermittently on a VM

[lawrence.andrews]

On Wed, 9 Nov 2022 10:37:24 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> Test intermittently fails in VM citing "Tree is not editing". Seems to be problem with mouse clicks not getting registered properly..
> Similar test test/jdk/javax/swing/JTable/6263446/bug6263446.java is not affected, so made the test similar to it by using same safeguard using Robot.waitForIdle() and modifying clickpoint to tree cell midpoint.
> 
> Several iterations of the test pass in the OCI VM and all other physical platforms (link in JBS)

test/jdk/javax/swing/JTree/6263446/bug6263446.java line 184:

> 182: 
> 183:         frame.getContentPane().add(tree);
> 184:         frame.setAlwaysOnTop(true);

Java doc says its better to check whether the platform supports this method before calling it 
https://docs.oracle.com/javase/7/docs/api/java/awt/Window.html#setAlwaysOnTop(boolean)

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PR: https://git.openjdk.org/jdk/pull/11057