Java question.

Could anyone please help me?

Thank you very much.

Design and implement classes Line, Oval, Circle, Rectangle, and Square for representing particular shapes. Pay careful attention to the hierarchy of these classes with respect to each other, and their relationship with Shape and EnclosesRegion. The Line class prepares a straight line between its start point and its control point. The classes Oval and Circle use the start point for their centre and the control point for the edge of the shape. However, Rectangle and Square use these points for opposite corners (the width of a Square is determined by the minimum horizontal or vertical difference between start and control point) Design and implement classes Line, Oval, Circle, Rectangle, and Square for representing particular shapes. Pay careful attention to the hierarchy of these classes with respect to each other, and their relationship with Shape and EnclosesRegion. The Line class prepares a straight line between its start point and its control point. The classes Oval and Circle use the start point for their centre and the control point for the edge of the shape. However, Rectangle and Square use these points for opposite corners (the width of a Square is determined by the minimum horizontal or vertical difference between start and control point)