Okay so my teacher assigned us this to do and I am going through it. I am very c

Question

 Okay so my teacher assigned us this to do and I am going through it. I am very confused with this whole thing. We went over classes once and will probably go over it again but I still need help. 

 I just need someone to do the first method that I have below. I dont understand why HE (the teacher) put down private final double PI= 3.14. I googled how to do classes and not one of them has done anything with private as opposed to public. I know what private and public mean but the class is public and the double is private which really confuses me. PLEASE HELP ME! 

 public class MyCircle {          //Define the constant PI.     private final double PI = 3.141592;          //The MyCircle class has one property: radius     //Put a radius in your class                    //The MyCircle class has methods too.           //Make a method that calculates the diameter of a circle. Recall the radius is half of the diameter.     //This method will take no parameters and return a double.     //Why no parameters? Because the circle class has a radius built in. All methods in the Circle class have access to it without it being passed     //as a parameter! Sweet! 

Explanation / Answer

Dear,

Here is the implementation of class as per requirements:

public class MyCircle
{
    //Define the constant PI.
    private final double PI = 3.141592;
    private double radius;
    public MyCircle(double r)
    {
        radius= r;
       
    }
    public double getDiameter()
    {
        return radius/2;
    }
}

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.