javafx.beans.property.SimpleObjectProperty

is imported to:

.   bluej.debugmgr
.   bluej.editor.moe
.   bluej.editor.stride
.   bluej.pkgmgr
.   bluej.stride.generic
.   bluej.stride.slots
.   bluej.utility.javafx
.   greenfoot.guifx
.   greenfoot.guifx.classes
.   greenfoot.guifx.images