A Triangle will have 3 sides. The class will be able to keep track of the number of Triangle objects created. It will also hold the total of the perimeters of all the Triangle objects created. ï It will allow a client to create a Triangle, passing in integer values for the three sides into the Triangle constructor. If the values for the sides that are passed in do not represent a valid Triangle (read below for the requirements for a Triangle to be valid) , then all sides will be set to a value of 1. The constructor should add 1 to the count of the number of Triangles created. The constructor should call a method to calculate the perimeter and then add the perimeter for that object to an accumulator. In addition to the constructor, the Triangle class must have the following methods that return a boolean value: isRight () - see note 1 below regarding Acute triangles. isAcute() - see note 1 below regarding Acute triangles. isObtuse() - see note 1 below regarding Obtuse triangles. isScalene() - no two sides are the same length isIsosceles() - exactly two sides are the same length isEquilateral() - all three sides are the same length isValid() - the sum of any two sides of a triangle must be greater than the third in order to represent a valid triangle. Also, no side may be 0 or negative. equals (Triangle t) – compares two Triangle objects to determine if they are equal. We will compare their perimeters to determine equality. Additional methods in the Triangle class toString() – returns a String that specifies the values for the 3 sides of the triangle calcPerim() – calculate and return the perimeter of the object. addTotalPerim(). This method will call calc_perim() and add the perimeter for that object to an accumulator. reduceTotalPerim(). This method should subtract the perimeter for that object from the accumulator. Accessor methods for all properties. The Triangle object cannot assume that the values of the 3 sides are entered in any particular order. Think about what that means. Be sure to specify proper visibility for all methods and properties Note 1: When given 3 triangle sides: to determine if the triangle is right 1) Square all 3 sides. 2) Sum the squares of the 2 shortest sides. 3) Compare this sum to the square of the 3rd side. 4) If equal then we have a right triangle Note 2: All methods MUST be well documented including formalized pre-conditions and post-conditions. Refer to document T-1_Design By Contract located in the testing folder in your Project 1 download for guidance. Note 3: Your Triangle and Circle classes MUST be written according to these specifications. Do not vary from those specs. Class ShapesDemo ShapesDemo will drive the application and manage the arrays which will store the Circle and Triangle objects. In main you will declare your Circle and Triangle arrays. You will need one array to store any Circle objects you create and another array to store any Triangle objects you create. You will also need to instantiate any other objects necessary necessary for input and output and declare any variables used in main. Review the Test Run to see how the application interfaces with the user. Inside a loop in main Prompt the user as shown below Allow the user to create either a Circle or a Triangle If the user selects Triangle then allow the user to type 3 integers on separate lines for each triangle. Instantiate each Triangle (refer to the sample dialog below for test data) Store each Triangle object in an array of Triangle objects. If the user selects Circle then allow the user to type in a double, representing the radius of the Circle. Instantiate each Circle (refer to the sample dialog below for test data) Store each Circle object in an array of Circle objects. ï Once you have entered you data, then inside a separate loop Use an if statements to test each triangle for its properties and print appropriate output. Print the values of the sides of each triangle. Print the properties that apply for each triangle. See the sample output. Print the Perimeter for each triangle. Inside a separate loop Test each Circle for its properties and print appropriate output. Print the values as shown in the Test Run. Test your equals method as shown in the Test Run. ï At the end print the total of the perimeters for all triangles. ï Output must be labeled, aligned, and reasonably well-spaced. Test your program using the data that I have provided in the test run. Copy and paste your output to the bottom of your TriangleDemo class. Analyze the test run. Take note of the data entered by the user and the corresponding output. This will help you understand the requirements and answer many of the questions you may have regarding the application. CLASS CIRCLE DIRECTIONS IS ATTACHED, PLEASE READ ALL DETAILS

A Triangle will have 3 sides. The class will be able to keep track of the number of Triangle objects created. It will also hold the total of the perimeters of all the Triangle objects created. ï It will allow a client to create a Triangle, passing in integer values for the three sides into the Triangle constructor. If the values for the sides that are passed in do not represent a valid Triangle (read below for the requirements for a Triangle to be valid) , then all sides will be set to a value of 1. The constructor should add 1 to the count of the number of Triangles created. The constructor should call a method to calculate the perimeter and then add the perimeter for that object to an accumulator. In addition to the constructor, the Triangle class must have the following methods that return a boolean value: isRight () - see note 1 below regarding Acute triangles. isAcute() - see note 1 below regarding Acute triangles. isObtuse() - see note 1 below regarding Obtuse triangles. isScalene() - no two sides are the same length isIsosceles() - exactly two sides are the same length isEquilateral() - all three sides are the same length isValid() - the sum of any two sides of a triangle must be greater than the third in order to represent a valid triangle. Also, no side may be 0 or negative. equals (Triangle t) – compares two Triangle objects to determine if they are equal. We will compare their perimeters to determine equality. Additional methods in the Triangle class toString() – returns a String that specifies the values for the 3 sides of the triangle calcPerim() – calculate and return the perimeter of the object. addTotalPerim(). This method will call calc_perim() and add the perimeter for that object to an accumulator. reduceTotalPerim(). This method should subtract the perimeter for that object from the accumulator. Accessor methods for all properties. The Triangle object cannot assume that the values of the 3 sides are entered in any particular order. Think about what that means. Be sure to specify proper visibility for all methods and properties Note 1: When given 3 triangle sides: to determine if the triangle is right 1) Square all 3 sides. 2) Sum the squares of the 2 shortest sides. 3) Compare this sum to the square of the 3rd side. 4) If equal then we have a right triangle Note 2: All methods MUST be well documented including formalized pre-conditions and post-conditions. Refer to document T-1_Design By Contract located in the testing folder in your Project 1 download for guidance. Note 3: Your Triangle and Circle classes MUST be written according to these specifications. Do not vary from those specs. Class ShapesDemo ShapesDemo will drive the application and manage the arrays which will store the Circle and Triangle objects. In main you will declare your Circle and Triangle arrays. You will need one array to store any Circle objects you create and another array to store any Triangle objects you create. You will also need to instantiate any other objects necessary necessary for input and output and declare any variables used in main. Review the Test Run to see how the application interfaces with the user. Inside a loop in main Prompt the user as shown below Allow the user to create either a Circle or a Triangle If the user selects Triangle then allow the user to type 3 integers on separate lines for each triangle. Instantiate each Triangle (refer to the sample dialog below for test data) Store each Triangle object in an array of Triangle objects. If the user selects Circle then allow the user to type in a double, representing the radius of the Circle. Instantiate each Circle (refer to the sample dialog below for test data) Store each Circle object in an array of Circle objects. ï Once you have entered you data, then inside a separate loop Use an if statements to test each triangle for its properties and print appropriate output. Print the values of the sides of each triangle. Print the properties that apply for each triangle. See the sample output. Print the Perimeter for each triangle. Inside a separate loop Test each Circle for its properties and print appropriate output. Print the values as shown in the Test Run. Test your equals method as shown in the Test Run. ï At the end print the total of the perimeters for all triangles. ï Output must be labeled, aligned, and reasonably well-spaced. Test your program using the data that I have provided in the test run. Copy and paste your output to the bottom of your TriangleDemo class. Analyze the test run. Take note of the data entered by the user and the corresponding output. This will help you understand the requirements and answer many of the questions you may have regarding the application. CLASS CIRCLE DIRECTIONS IS ATTACHED, PLEASE READ ALL DETAILS

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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Question

A Triangle will have 3 sides. The class will be able to keep track of the number of Triangle objects created. It will also hold the total of the perimeters of all the Triangle objects created.

ï It will allow a client to create a Triangle, passing in integer values for the three sides into the Triangle constructor.

If the values for the sides that are passed in do not represent a valid Triangle (read below for the requirements for a Triangle to be valid) , then all sides will be set to a value of 1.
The constructor should add 1 to the count of the number of Triangles created.
The constructor should call a method to calculate the perimeter and then add the perimeter for that object to an accumulator.

In addition to the constructor, the Triangle class must have the following methods that return a boolean value:

isRight () - see note 1 below regarding Acute triangles.
isAcute() - see note 1 below regarding Acute triangles.
isObtuse() - see note 1 below regarding Obtuse triangles.
isScalene() - no two sides are the same length
isIsosceles() - exactly two sides are the same length
isEquilateral() - all three sides are the same length
isValid() - the sum of any two sides of a triangle must be greater than the third in order to represent a valid triangle. Also, no side may be 0 or negative.
equals (Triangle t) – compares two Triangle objects to determine if they are equal. We will compare their perimeters to determine equality.

Additional methods in the Triangle class

toString() – returns a String that specifies the values for the 3 sides of the triangle
calcPerim() – calculate and return the perimeter of the object.
addTotalPerim(). This method will call calc_perim() and add the perimeter for that object to an accumulator.
reduceTotalPerim(). This method should subtract the perimeter for that object from the accumulator.
Accessor methods for all properties.
The Triangle object cannot assume that the values of the 3 sides are entered in any particular order. Think about what that means.

Be sure to specify proper visibility for all methods and properties

Note 1:

When given 3 triangle sides:

to determine if the triangle is right

1) Square all 3 sides.

2) Sum the squares of the 2 shortest sides.

3) Compare this sum to the square of the 3rd side.

4) If equal then we have a right triangle

Note 2:

All methods MUST be well documented including formalized pre-conditions and post-conditions. Refer to document T-1_Design By Contract located in the testing folder in your Project 1 download for guidance.

Note 3:

Your Triangle and Circle classes MUST be written according to these specifications. Do not vary from those specs.

Class ShapesDemo

ShapesDemo will drive the application and manage the arrays which will store the Circle and Triangle objects. In main you will declare your Circle and Triangle arrays. You will need one array to store any Circle objects you create and another array to store any Triangle objects you create. You will also need to instantiate any other objects necessary necessary for input and output and declare any variables used in main.
Review the Test Run to see how the application interfaces with the user.
Inside a loop in main

Prompt the user as shown below
Allow the user to create either a Circle or a Triangle
If the user selects Triangle then allow the user to type 3 integers on separate lines for each triangle.
Instantiate each Triangle (refer to the sample dialog below for test data)
Store each Triangle object in an array of Triangle objects.
If the user selects Circle then allow the user to type in a double, representing the radius of the Circle.
Instantiate each Circle (refer to the sample dialog below for test data)
Store each Circle object in an array of Circle objects.

ï Once you have entered you data, then inside a separate loop

Use an if statements to test each triangle for its properties and print appropriate output.

Print the values of the sides of each triangle.
Print the properties that apply for each triangle. See the sample output.
Print the Perimeter for each triangle.

Inside a separate loop

Test each Circle for its properties and print appropriate output.

Print the values as shown in the Test Run.

Test your equals method as shown in the Test Run.

ï At the end print the total of the perimeters for all triangles.

ï Output must be labeled, aligned, and reasonably well-spaced. Test your program using the data that I have provided in the test run. Copy and paste your output to the bottom of your TriangleDemo class.

Analyze the test run. Take note of the data entered by the user and the corresponding output. This will help you understand the requirements and answer many of the questions you may have regarding the application.

CLASS CIRCLE DIRECTIONS IS ATTACHED, PLEASE READ ALL DETAILS

Class Circle
A Circle will have a radius. The class will be able to keep track of the number of Circle
objects created. It will also hold the total of the circumferences of all the Circle objects
created.
It will allow a client to create a Circle, passing in a double value for the radius into the Circle
constructor.
If the value for the radius that is passed in is or negative, then the radius will be set to a
value of 999.
The constructor should add 1 to the count of the number of Circles created.
The constructor should call a method to calculate the circumference and then add the
circumference for that object to an accumulator.
In addition to the constructor, the Circle class must have the following methods that return a
boolean value:
isCongruent(Circle c) – Compares two Circle objects to determine if they are congruent
(radii are equal).
is Valid() – the radius may not be 0 or negative.
equals (Triangle t) – compares two Triangle objects to determine if they are equal. We
will compare their circumferences to determine equality.
Additional methods in the Circle class
toString() – returns a String that specifies the value of the radius
calcCircumference() – calculate and return the circumference of the object.
calcArea() – calculate and return the area of the object
addTotalCircumference(). This method will call calcCircumference() and add the
çircumberence for that object to an accumulator.
reduceTotalCircumference(). This method should subtract the circumference for that
object from the accumulator.
Accessor methods for all properties.
-

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