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No. The JavaFX 2.2 core platform does not include similar functionality to Swing's JInternalFrame.
You could also look at functionality from 3rd parties which provide similar capabilities:
thanks. and what about for system tray ？
For system tray in JavaFX 2.2, you need to use AWT, see =>
Note that the request to get System tray functionality added to JavaFX is:
Which is currently scheduled for a feature update release to be delivered *after* Java 8 comes out.