Lab Objectives This lab was designed to reinforce programming concepts from Chapter 6 of Java How to Program: 11/e. In this lab you will practice: Declaring and using class & methods Using class objects Problem Description Build a class called buildCircle_Yourlinitial using the following class table buildCircle_YourInitial -radius: double -requestRadius(): duble + calculator ():void +printPerimeter(): void +printArea():void Programming Steps Step 1: Create a Java program to define this dass buildCircle_YourInitial, including your initial in the file name and class name. All members of the class must be declared within the class declaration. 1. One instance variable radius 2. No declaration for any constructor The compiler will create the following default constructor public buildCircle_Your Initial() b. The default constructor will be used to create an object of the classif needed 3. Four methods of the class (no set method noget method) a. calculator The declaration is given It is a trigger to call all other three methods public void calculator() { do ( //Request a raduis radius requestRadius(); //Calculate the perimeter & area of the circle if (radius 0) ( printPerimeter(); printArea(): System.out.println(); 1 while (radius 1-01 //and method calculator b. requestRadius L. You should provide the definition for this method It should ask a value from user for the instance variable radius It is private so it can only be called through the method calculator in another class, for protection purpose iv. You must add an import declaration before the dass declaration since you will use Scanner class in this method v. The entered value will be returned so in the caller method (calculator) it could be set to the instance variable radius 1) Since the entered value is for radius, it must be positive 2) It can also be 0 since O will be taken as a flag to stop the loop in the method calculator 3) Aloop is needed to keep requesting till a non-negative value is entered c print Printer & printre i. You should provide the definition for these two methods, which simply print out the calculation result