Answer:
/*********************************************************************************
* (The ComparableCircle class) Define a class named ComparableCircle that *
* extends Circle and implements Comparable. Draw the UML diagram and implement *
* the compareTo method to compare the circles on the basis of area. Write a test *
* class to find the larger of two instances of ComparableCircle objects. *
*********************************************************************************/
public class Exercise_13_06 {
/** Main method */
public static void main(String[] args) {
// Create two instances of ComparableCircle objects
ComparableCircle comparableCircle1 = new ComparableCircle(12.5);
ComparableCircle comparableCircle2 = new ComparableCircle(18.3);
// Display comparableCircles
System.out.println("\nComparableCircle1:");
System.out.println(comparableCircle1);
System.out.println("\nComparableCircle2:");
System.out.println(comparableCircle2);
// Find and display the larger of the two ComparableCircle objects
System.out.println((comparableCircle1.compareTo(comparableCircle2) == 1
? "\nComparableCircle1 " : "\nComparableCircle2 ") +
"is the larger of the two Circles");
}
}
