javax.swing.SwingUtilities

is imported to:

.   bluej.debugmgr
.   bluej.debugmgr.inspector
.   bluej.debugmgr.objectbench
.   bluej.extmgr
.   bluej.pkgmgr
.   bluej.pkgmgr.actions
.   bluej.pkgmgr.target
.   bluej.prefmgr
.   bluej.runtime
.   bluej.utility.javafx
.   greenfoot.guifx.export