Chapter 2.10, Problem 45SC

Program Plan Intro

Syntax to draw an ellipse:

To draw an ellipse, either any one of the classes need to be used such as “Ellipse2D.Float” and “Ellipse2D.Double” and this class is used based on the ellipse co-ordinates of single or double precision floating values.

Consider the following code to construct an ellipse,

//Fix the co-ordinates and assign it to object “ellip1”

Ellipse2D.Double ellip1=new Ellipse2D.Double(x, y, width, height);

In the above code, the “Ellipse2D.Double” represents that there are two class names “Ellipse2D” and “Double” which is separated by period (.) symbol and it passes four co-ordinates namely “x”, “y”, “width”, and “height”.

Syntax to draw a circle:

To draw a circle, follow the same code but for width and height use the same values. Here, the circle is passed with “x-coordinate”, “y-coordinate”, and “diameter”.

//Fix the co-ordinates and assign it to object “cir1”

Ellipse2D.Double cir1=new Ellipse2D.Double(x, y, diameter, diameter);

//Call draw() to draw the circle

g2.draw(cir1);

Explanation:

• In the above code, “cir1” is the object name of the circle and it passes four parameters such as “x-coordinate”, “y-coordinate”, and “diameter”.
• Next, using the graphics object “g2”, call draw()method to draw the circle.