Is Java System Property "swing.defaultlaf" actually referenced in source?

[Ludwig, Mark]

Greetings,

We are in the process of (finally) completing a migration from AWT-based windows and dialogs to Swing-based that was started in the 1990s.

Testing the external Swing controls on Linux, we find nothing seems to happen as a result of setting the "swing.defaultlaf" System Property.  This is documented in multiple places - at least the javax.swing.UIManager doc, and the How to Set the Look and Feel tutorial (and is mentioned in https://bugs.openjdk.org/browse/JDK-8159164).

We find the "swing.systemlaf" System Property is effective in changing the returned value from UIManager.getSystemLookAndFeelClassName(), but does not by itself change the look-and-feel -- only with something like UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()), which is documented.

We would appreciate clarity on this discrepancy regarding the "default" look-and-feel for Swing on Linux.

Thanks,
Mark Ludwig

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