Sams Teach Yourself C in 21 Days

Working with Java Classes and Methods 735

BD5

LISTINGB5.9 circle2.java. A class with an overloaded constructor

1: import java.lang.String;

2:

3: public class circle {

4:

5: public double radius;

6: public String name;

7:

8: circle () {

9: radius = 0;

10: name = “Unnamed”;

11: }

12:

13: circle (double r) {

14: radius = r;

15: name = “Unnamed”;

16: }

17:

18: circle (double r, String n) {

19: radius = r;

20: name = n;

21: }

22: }

LISTINGB5.10 UseCircle2.java. Demonstrating the use of overloaded constructors

1: import java.lang.String;

2: import java.lang.Double;

3:

4: public class ConstructorDemo {

5: public static void main(String args[]) {

6:

7: circle c1;

8: circle c2;

9: circle c3;

10:

11: c1 = new circle();

12: c2 = new circle(99.99);

13: c3 = new circle(0.001, “Harold”);

14: System.out.println(“For c1:”);

15: System.out.println(“ The radius is “ + Double.toString(c1.radius));

16: System.out.println(“ The name is “ + c1.name);

17: System.out.println(“For c2:”);

18: System.out.println(“ The radius is “ + Double.toString(c2.radius));

19: System.out.println(“ The name is “ + c2.name);

20: System.out.println(“For c3:”);

21: System.out.println(“ The radius is “ + Double.toString(c3.radius));

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