Question

Ex2. Each of the following questions is about user painting. Mark T if the question is valid, otherwise F.
(1) Graphics class provides methods for drawing strings, lines, rectangles, ellipses, arcs, polygons, and polygons ( )
(2) Painting on components requires redefinition of the panel inheritance and painting-related paintComponent( )
(3) super.painComponent(g) calls the defined pintComponent() in the parent class, which is necessary to ensure that the visible area is emptied prior to the new drawing display ( )
(4) Because refaint() is defined in the component, the drive of the refaint is called by the pintComponent() to create a new field of view, it is called to display new objects ( )
(5) Use getPreferredSize() as defined in Component to ensure that the user has the preferred size of the layout manager ( )

Please solve the problem. and Please Let me explain the process.

Thank you:)

Answer 1

There's no method called painComponent() or pintComponent(), I'm assuming that they're paintComponent() and refaint() as repaint().

ANSWERS:

1.FALSE

EXPLANATION:-Graphics class provides methods for drawing strings, lines, rectangles, arcs, polygons, and polygons ( ).But the Graphics class does not contain any method for ellipses. So, to draw an ellipse, we have to use drawOval().

2.TRUE

3. FALSE

EXPLANATION:- super.paintComponent(g) will call the defined pintComponent() in the parent class but it does not empty any visible area. It is used to paint a field.

4. TRUE

5. TRUE