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LiRa [457]
3 years ago
8

The Circle and CircleTester have been created, but they have errors. The public and private settings for variables and methods a

re not all correct.
Your job is to go through and fix them. You will need to make edits in both files to get them working correctly, but once complete, your output should match the output below.
Sample Output:
Circle with a radius of 5.0
The diameter is 10.0
The perimeter is 31.41592653589793
CIRCLE.JAVA
public class Circle {
public double radius;
private Circle(double myRadius) {
radius = myRadius;
private void setRadius(int myRadius){
radius = myRadius;
}
private double getDiameter() {
return radius*2;
}
public double getRadius() {
return radius;
}
private double getPerimeter() {
return Math.PI*getDiameter();
}
private String toString() {
return "Circle with a radius of " + radius;
}
}
CIRCLE TESTER.JAVA
public class CircleTester {
public static void main(String[] args) {
Circle circ = new Circle(10);
circ.radius = 5;
System.out.println(circ);
System.out.println("The diameter is " + circ.getDiameter());
System.out.println("The perimeter is " + circ.getPerimeter())
}
}
Computers and Technology
1 answer:
professor190 [17]3 years ago
8 0

<u>Answer:</u>

CIRCLE.JAVA

public class Circle {

  <em>private</em><em> </em>double radius;

  <em>public</em> Circle(double myRadius) {

    radius = myRadius;

    private void setRadius(int myRadius){

    radius = myRadius;

 }

 <em>public </em>double getDiameter() {

    return radius*2;

 }

 public double getRadius() {

   return radius;

 }

 <em>public </em> double getPerimeter() {

   return Math.PI*getDiameter();

 }

 <em>public</em> String toString() {

    return "Circle with a radius of " + radius;

 }

}

CIRCLE TESTER.JAVA

public class CircleTester {

 public static void main(String[] args) {

    Circle circ = new Circle(10);

    circ.radius = 5;

    System.out.println(circ);

    System.out.println("The diameter is " + circ.getDiameter());

    System.out.println("The perimeter is " + circ.getPerimeter())

 }

}

<u>Explanation:</u>

public class Circle {

  //This could be made private or public.

  //Making it private is better

  <em>private</em><em> </em>double radius;

  //This is a constructor. It should be made public

  //since it would most likely be used in another class

  //to create an object of this class.

  //Making it private means no other external class can create

  //an object of this class.

  //Since the tester class (CIRCLETESTER.java), as shown on line 3,

  // needs to create

  //an object of this class, this should be made public

  <em>public</em> Circle(double myRadius) {

    radius = myRadius;

    private void setRadius(int myRadius){

    radius = myRadius;

 }

 //This should be made public since it will be

// used in another class (CIRCLETESTER.java in this case)

 <em>public </em>double getDiameter() {

    return radius*2;

 }

 public double getRadius() {

   return radius;

 }

 //This should be made public since it will be

 //used in another class (CIRCLETESTER.java)

 <em>public </em> double getPerimeter() {

   return Math.PI*getDiameter();

 }

 //The toString() method is the string representation

 //of an object and is called when there is an attempt to

 //print the object. It should be made public since it will

 //be used in another class (CIRCLETESTER.java)

 <em>public</em> String toString() {

    return "Circle with a radius of " + radius;

 }

}

CIRCLE TESTER.JAVA

public class CircleTester {

 public static void main(String[] args) {

    Circle circ = new Circle(10);

    circ.radius = 5;

    System.out.println(circ);

    System.out.println("The diameter is " + circ.getDiameter());

    System.out.println("The perimeter is " + circ.getPerimeter())

 }

}

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