javafx.scene.input.MouseButton

is imported to:

.   bluej.debugmgr
.   bluej.debugmgr.codepad
.   bluej.debugmgr.inspector
.   bluej.debugmgr.objectbench
.   bluej.editor.moe
.   bluej.editor.stride
.   bluej.graph
.   bluej.groupwork.ui
.   bluej.pkgmgr.target
.   bluej.stride.framedjava.slots
.   bluej.stride.generic
.   bluej.terminal
.   bluej.testmgr
.   bluej.utility
.   bluej.utility.javafx
.   greenfoot.export
.   greenfoot.gui.input.mouse
.   greenfoot.guifx
.   greenfoot.guifx.classes
.   greenfoot.guifx.export
.   greenfoot.mouse
.   greenfoot.vmcomm