In this test, create frames on multiple screens by using Frame(screenDevice[i].getDefaultConfiguration()), put some components on the frames, then try to use requestFocus() to move focus from components on one screen to the components on another screen. Focus can not be moved to the primary screen by using requestFocus() if the focus is already in the second screen.

FocusGained() method did not be invoked on solaris, so it might be event bug instead of focus bug.

The result of windows is not stable. FocusGained() be invoked, but focus has problem to be signed to the correct components. Components on screen0 call requestFocus() but components on screen1 got the focus happened. There is a problem noticed on windows, fe.getSource() in the focusGained( FocusEvent fe ) method print out
java.awt.TextField[textfield0,175,28,108x23,text=focus field1,editable,selection=0-0] notice that the name of the component textfield0 is not match the text label of the component "focus field1" which suppose to match.

Test file is attached.