Problem Description Build a class called buildCircle_YourInitial using the following class table. buildCircle_YourInitial -radius: double - requestRadius (): double + calculator (): void + printPerimeter (): void + printArea (): void Programming Steps Step 1: Create a Java program to define this class buildCircle_Your Initial, 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 CS140-02, TSU a. The compiler will create the following default constructor public buildCircle_YourInitial() { } Created by Li Ma b. The default constructor will be used to create an object of the class if needed 3. Four methods of the class (no set method nor get method!) a. calculator i. The declaration is given ii. 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) { print Perimeter (); printArea(); System.out.println(); } } while (radius != 0); }//end method calculator. b. requestRadius i. You should provide the definition for this method ii. It should ask a value from user for the instance variable radius iii. 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 class 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 0 will be taken as a flag to stop the loop in the method calculator 3) A loop is needed to keep requesting till a non-negative value is entered c. printPerimeter & printArea i. You should provide the definition for these two methods, which simply print out the calculation result
Problem Description Build a class called buildCircle_YourInitial using the following class table. buildCircle_YourInitial -radius: double - requestRadius (): double + calculator (): void + printPerimeter (): void + printArea (): void Programming Steps Step 1: Create a Java program to define this class buildCircle_Your Initial, 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 CS140-02, TSU a. The compiler will create the following default constructor public buildCircle_YourInitial() { } Created by Li Ma b. The default constructor will be used to create an object of the class if needed 3. Four methods of the class (no set method nor get method!) a. calculator i. The declaration is given ii. 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) { print Perimeter (); printArea(); System.out.println(); } } while (radius != 0); }//end method calculator. b. requestRadius i. You should provide the definition for this method ii. It should ask a value from user for the instance variable radius iii. 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 class 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 0 will be taken as a flag to stop the loop in the method calculator 3) A loop is needed to keep requesting till a non-negative value is entered c. printPerimeter & printArea i. You should provide the definition for these two methods, which simply print out the calculation result
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Question
Hello can you please help me do this Java program?
Transcribed Image Text:Problem Description
Build a class called buildCircle_Yourlnitial using the following class table.
-radius: double
-requestRadius (): double
+ calculator (): void
+ printPerimeter (): void
+ printArea (): void
Programming Steps
Step 1:
Create a Java program to define this class buildCircle_Your Initial, 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
CS140-02, TSU
buildCircle_YourInitial
a. The compiler will create the following default constructor
public buildCircle_YourInitial()
({
}
b. The default constructor will be used to create an object of the class if needed
3. Four methods of the class (no set method nor get method!)
a. calculator
i. The declaration is given
ii. It is a trigger to call all other three methods
public
do
void calculator () {
(
//Request a raduis
radius= requestRadius ();
//Calculate the perimeter & area of the circle.
if (radius> 0) {
print Perimeter();
printArea();
System.out.println();
}
} while (radius != 0);
}//end method calculator
b. requestRadius
Created by Li Ma
i. You should provide the definition for this method
ii. It should ask a value from user for the instance variable radius
iii. 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 class 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 0 will be taken as a flag to stop the loop in
the method calculator
3) A loop is needed to keep requesting till a non-negative value is
entered
c. printPerimeter & printArea
i. You should provide the definition for these two methods, which simply
print out the calculation result
Transcribed Image Text:Step 2:
Create a Java application called Project6_buildCircleApp_YourInitial.java to use class
buildCircle_YourInitial (a Java application, also called a demo or a driver).
Your application only needs to call the trigger method of the class calculator.
Step 3:
Debug and run the application Project6_buildCircleApp_YourInitial.java. Snapshot your
compiler window to fully show your output pane and name the image as
Project6_Your Name.png.
You must make sure your both program files are in the same folder.
Sample Output
General Output
Please enter a radius (positive or 0 to exit): 5
The perimeter of your circle is 31.4.
The area of your circle is 78.5.
Please enter a radius (positive or 0 to exit): 8
The perimeter of your circle is 50.3.
The area of your circle is 201.1.
Please enter a radius (positive or 0 to exit): 90
The perimeter of your circle is 565.5.
The area of your circle is 25446.9.
Please enter a radius (positive or 0 to exit): 0
Process completed.
Submission
Submit the completed Java programs buildCircle_YourInitial.java (60%) &
Project6_buildCircleApp_YourInitial.java (20%) and the image of the output
Project6_Your Name.png (20%) to Blackboard via the link Project6 in Assignments section on
the course page.
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