using JAVA Instructions: Using the Java naming conventions and javadoc comments
ID: 3585916 • Letter: U
Question
using JAVA
Instructions:
Using the Java naming conventions and javadoc comments create the
following.
You are a scientific computing company known as thefourthwall at
www.thefourthwall.net
Create a java package using the above information which holds the
following classes:
1. class
“
cone
”
includes a constant for PI called
“
our pi constant
”
, and set and get
methods for the height and radius of the cone. Also, calculate th
e cone
’
s area and
volume.
2. In class
“
cone user
”
there should be stages/steps in which we print data about the
cone. The print method prints a string consisting of the attribute of
the cone that is to be
printed along with the numerical value of the attribute in quest
ion. The print method
does NOT belong to an object.
Step 1: print the cone
’
s height.
Step 2: print the cone
’
s radius at the base.
Step 3: print the cone
’
s surface area.
Step 4: print the cone
’
s volume.
The print message should say the following:
Cone {attribute} is {value}. (Newline x2)
print(String attribute, Float value)
All classes and methods should be accompanied by a JavaDoc comme
nt.
Explanation / Answer
Please find my implementation.
public class Cone {
private static final double PI = 3.14;
private double height;
private double radius;
// setters and getters
/**
* @return height of the cone
*/
public double getHeight() {
return height;
}
/**
* @return radius of the cone
*/
public double getRadius() {
return radius;
}
/**
* @param height
*/
public void setHeight(double height) {
this.height = height;
}
/**
* @param radius
*/
public void setRadius(double radius) {
this.radius = radius;
}
/**
* @return surface area of the cone
*/
public double area() {
double length = Math.sqrt(radius * radius + height * height);
return PI * radius * (radius + length);
}
/**
* @return volume of the cone
*/
public double volume() {
return (PI*radius*radius*height)/3.0;
}
public void print() {
System.out.println("Cone height is "+height);
System.out.println("Cone radius is "+radius);
System.out.println("Cone surface area is "+area());
System.out.println("Cone volume is "+volume());
}
public static void main(String[] args) {
Cone cone = new Cone();
cone.setHeight(4.5);
cone.setRadius(3.5);
cone.print();
}
}
/*
Sample run:
Cone height is 4.5
Cone radius is 3.5
Cone surface area is 101.11763960919764
Cone volume is 57.69750000000001
*/
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