Draw contour diagrams to show the state of execution prior to the following line numbers of the CalcAreaCircle class in Fig. 2.35 in Sect. 2.11.

A. Line 8
B. Line 12 (assume an input value of 2.0 )

Transcribed Image Text:

// a program to calculate the area of a circle import java.util. *; class CalcAreaCircle { public static void main(String[] args) { } // declaration and initialization of variables double radius; Circle circle; Scanner scanner; circle = new Circle(); scanner = new Scanner (System.in); // input radius System.out.print ("Enter the radius: "); radius scanner.nextDouble(); circle.setRadius (radius); // compute and output the area of the circle System.out.println(); System.out.print ("The area of the circle with a radius of "); System.out.printf(" %.2f cm is .2f", radius, circle.computeArea()); System.out.println(" square cm. "); // Line 1 // Line 2 // Line 3 // Line 4 // Line 5 // Line 6 // Line 7 // Line 8 // Line 9 // Line 10 // Line 11 // Line 12 // Line 13 // Line 14 // Line 15