Could you program it and commenteach line for me...?? thank you in advance.... C
ID: 3611379 • Letter: C
Question
Could you program it and commenteach line for me...?? thank you in advance.... Class: Design a circle class that has the followingfields: - radius : a double - PI : a double initialized with the value 3.14159 the class should have the following methods: - constructor : accept the radius of the circle - setradius : a mutator method for the radiusfield - GetRadius : an accessor method for the radiusfield - Get Area : return the area of the circle : area = PI *radius - GetDiameter: return the diameter of the circle = 2 *radius - GetCircumfrence : return the circumference of thecircle = 2 * PI * radius Menu ------------------------------------------------- circle 1, Set radius 2, Get the radius 3, Compute the area of the circle 4, Compute the diameter 5, compute the circumference 6, exit -------------------------------------------- Create a circle object and test each menu option. Don't allowthe user to perform 3 - 5 option until option 1 is not done. when using option 1, ask the userinteractively the value of the radius Option 6. exit the program with a statement " bye" Could you program it and commenteach line for me...?? thank you in advance.... Class: Design a circle class that has the followingfields: - radius : a double - PI : a double initialized with the value 3.14159 the class should have the following methods: - constructor : accept the radius of the circle - setradius : a mutator method for the radiusfield - GetRadius : an accessor method for the radiusfield - Get Area : return the area of the circle : area = PI *radius - GetDiameter: return the diameter of the circle = 2 *radius - GetCircumfrence : return the circumference of thecircle = 2 * PI * radius Menu ------------------------------------------------- circle 1, Set radius 2, Get the radius 3, Compute the area of the circle 4, Compute the diameter 5, compute the circumference 6, exit -------------------------------------------- Create a circle object and test each menu option. Don't allowthe user to perform 3 - 5 option until option 1 is not done. when using option 1, ask the userinteractively the value of the radius Option 6. exit the program with a statement " bye"Explanation / Answer
/* copy the below code to "Circle.java" to compile : "javac Circle.java" to run "java Circle" */ import java.io.*; import java.util.*; import java.lang.*; public class Circle{ public double radius=0.0; //initialization of variable radius public static double pi = 3.14159; //variable pi is initialisedwith 3.14159 /* Constructer of Circle class which takes an argument forradius and initializes radius of the class */ public Circle( double r) { this.radius= r; //the radius of the currentcircle is set to r } public void setRadius( double r) { this.radius =r; //sets the radius to r } public double getRadius() { return this.radius; //this function returns theradius of the circle } public double getArea() { double area = (pi * radius * radius);//calcualtes the area of the circle return area; //returns the area } public double getDiameter() { double diameter = (2 * radius); //calcualtes thediameter of the circle return diameter; //returns the diameter } public double getCircumference() { double circumference = (2 * pi * radius);//calcualtes the area of the circle return circumference; //returns thecircumference of the circle } public static void main(String[] args){ int radius_Set=0; /*it stores the value whether radius of thecircle is set...if radius_Set is 1 then only we will allow options3,4,5 to be called */ int choice=0; //stores the choice of the user double radius =0.0; Circle c=null; //initializes a new circle do { System.out.println("Menu " +"------------------------------------------------- "+" circle " + "1, Set radius "+ "2, Get the radius " + "3, Compute the area of the circle "+ "4, Compute thediameter " + "5, compute the circumference " + "6, exit " + "--------------------------------------------"); try { choice = Integer.parseInt(new BufferedReader(newInputStreamReader(System.in)).readLine());/*reads the choice fromthe system.*/ } catch (Exception e) { e.printStackTrace(); } if(choice ==1) { System.out.print("Enter theRadius: "); try { radius =Double.parseDouble (new BufferedReader(newInputStreamReader(System.in)).readLine()); /*reads the radius fromsystem */ } catch (Exception e) { e.printStackTrace(); } System.out.println(); System.out.println(); c = new Circle(radius); /*calls teh constructer of the circle with the radius entered by theuser */ radius_Set =1; /* theradius_Set values is 1 now...it allows options 3-5 to be called*/ } if(choice ==2) { System.out.println("Theradius of the circle id: " +(c.getRadius()) ); } if(choice ==3) { if(radius_Set ==1) { System.out.println("The area of the circle is: "+(c.getArea()) ); /* now radius is set and we print the area */ } else System.out.println("You have not entered the radius...tryagain"); } if(choice ==4) { if(radius_Set ==1) { System.out.println("The diameter of the circle is: "+(c.getDiameter()) ); /* now radius is set and we print thediameter */ } else System.out.println("You have not entered the radius...tryagain"); } if(choice ==5) { if(radius_Set ==1) { System.out.println("The circumference of the circle is: "+(c.getCircumference()) ); /* now radius is set and we print thecircumference */ } else System.out.println("You have not entered the radius...tryagain"); } if(choice ==6) { System.out.println("Bye"); } } while(choice !=6); }//end of main }//end of CIrcle class