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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 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 L. The declaration is given It is a trigger to call all other three methods public void calculator() { do { //Request a raduis radius request Radius(); //Calculate the perimeter & area of the circle if (radius 0) { print Perimeter (); printArea(); System.out.println(); } } while (radius 1- 0); //end 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 lv. 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 O since O 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 L You should provide the definition for these two methods, which simply print out the calculation result

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 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 L. The declaration is given It is a trigger to call all other three methods public void calculator() { do { //Request a raduis radius request Radius(); //Calculate the perimeter & area of the circle if (radius 0) { print Perimeter (); printArea(); System.out.println(); } } while (radius 1- 0); //end 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 lv. 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 O since O 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 L You should provide the definition for these two methods, which simply print out the calculation result

Database System Concepts
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
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Hello I hope you're having a great day. Can you please help me do this Java program, please remember to

seperated the class definition and the application (there should be two programs)!

Two print methods should be public!

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 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 1. The declaration is given il. It is a trigger to call all other three methods public void calculator() { do { //Request a raduis radius request Radius(); //Calculate the perimeter & area of the circle if (radius> 0) { print Perimeter (); printArea(); System.out.println(); } } while (radius 1- 0); //end method calculator b. requestRadius 1. 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 1. You should provide the definition for these two methods, which simply print out the calculation result
Transcribed Image Text: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 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 1. The declaration is given il. It is a trigger to call all other three methods public void calculator() { do { //Request a raduis radius request Radius(); //Calculate the perimeter & area of the circle if (radius> 0) { print Perimeter (); printArea(); System.out.println(); } } while (radius 1- 0); //end method calculator b. requestRadius 1. 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 1. You should provide the definition for these two methods, which simply print out the calculation result
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_YourName.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.
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_YourName.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.
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