java.io.InputStream

is imported to:

.   bluej.extmgr
.   bluej.pkgmgr
.   bluej.runtime
.   bluej.utility
.   bluej.views
.   greenfoot.core
.   greenfoot.export
.   greenfoot.export.mygame
.   greenfoot.platforms.standalone
.   greenfoot.sound
.   greenfoot.util