Question

1. Write a toString method for this class. The method should return a string containing the radius and area of the circle.

Answer 1

Answer:

public class Circle {

private double radius;

public Circle(double r)

{

radius = r;

}

public double getArea()

{

return Math.PI * radius * radius;

}

public double getRadius()

{

return radius;

}

public String toString()

{

String str;

str = "Radius: " + radius +

"Area: " + getArea();

return str;

}

public boolean equals(Circle c)

{

boolean status;

if(c.getRadius() == radius)

status = true;

else

status = false;

return status;

}

public boolean greaterThan(Circle c)

{

boolean status;

if(c.getArea() > getArea())

status = true;

else

status = false;

return status;

}

}

Explanation:

There is nothing with the logic of your code it work fine the problem is with the structure of your code you added an extra  curly brace before declaring (r)

****************************** Am talking about this section **********************

public class Circle {

{

private double radius;

****************************   It should be    *******************************************

public class Circle {

private double radius;