org.jhotdraw.framework
Interfaces 
ConnectionFigure
Connector
Cursor
Drawing
DrawingChangeListener
DrawingEditor
DrawingView
Figure
FigureChangeListener
FigureEnumeration
FigureSelection
FigureSelectionListener
FigureVisitor
Handle
HandleEnumeration
Locator
Painter
PointConstrainer
Tool
ToolListener
ViewChangeListener
Classes 
DrawingChangeEvent
FigureAttributeConstant
FigureChangeEvent
Exceptions 
JHotDrawException
JHotDrawRuntimeException