Consider the following code: public class DemoClass{ private double PI = 3.1416; void calculateArea(double radius){ double area = PI*radius*radius; System.out.println("Area: " + area); } public static void main(String []args){ calculateArea(5.0); } } a) Suggest modification to the code so that the value of PI cannot be modified later. Also modify the above code so that it can run without any error. b) Create a non-static inner class inside the DemoClass. Move the calculateArea() function inside the inner class. Now call the calcualteArea() function from the main() function.
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- Explain below code #include <iostream>#include <cmath>using namespace std; const int DIAMETER = 20; // diameter of each ringconst int SPACE = 5; // space between rings class Circle{ public: void drawOlympicRings(int RINGS) { for (int y = 0; y < DIAMETER; y++) { for (int x = 0; x < RINGS * (DIAMETER + SPACE) - SPACE; x++) { bool draw = false; // calculate the distance from the center of each ring for (int i = 0; i < RINGS; i++) { int cx = (DIAMETER / 2) + i * (DIAMETER + SPACE); int cy = DIAMETER / 2; int dx = x - cx; int dy = y - cy; float d = sqrt(dx * dx + dy * dy); if (d <= DIAMETER / 2) { draw = true;…Term by CodeChum Admin (JAVA CODE) Construct a class called Term. It is going to represent a term in polynomial expression. It has an integer coefficient and an exponent. In this case, there is only 1 independent variable that is 'x'. There should be two operations for the Term: public Term times(Term t) - multiplies the term with another term and returns the result public String toString() - prints the coefficient followed by "x^" and appended by the exponent. But with the following additional rules: if the coefficient is 1, then it is not printed. if the exponent is 1, then it is not printed ( the caret is not printed as well) if the exponent is 0, then only the coefficient is printed. Input The first line contains the coefficient and the exponent of the first term. The second line contains the coefficient and the exponent of the second term. 1·1 4·3 Output Display the resulting product for each of the test case. 4x^4In C++ QUESTION 14 class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Write the function definition for the function perimeter
- Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…Q5: Correct the following code fragment and what will be the final results of the variable a and b class A {protected int x1,1,2; public: A(a, b,c):x1(a+2),y1 (b-1),z(c+2) { for(i=0; i<5;i++) x1++;y1++;z++;}}; class B {protected: int x,y; public: B(a,b):x(a+1),y(b+2) { for(i=0; i<5;i++) x+=2; y+=1;}}; class D:public B, virtual public A { private: int a,b; public: D(k,m,n): a(k+n), B(k,m),b(n+2),A(k,m,n) { a=a+1;b=b+1;}); int main() {Dob(4,2,5);)class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here
- class A Q5: Correct the following code fragment and what will be the final results of the variable a and b { protected int x1,y1,z; public: A(a, b,c):x1(a+2),y1(b-1),z(c+2) { for(i=0; i<5;i++) x1++; y1++;z++;}}; class B { protected: int x,y; public: B(a,b):x(a+1),y(b+2) { for(i=0; i<5;i++) x+=2; y+=1;}}; class D:public B, virtual public A { private: int a,b; public: D(k,m,n): a(k+n), B(k,m),b(n+2),A(k,m,n) { a=a+1;b=b+1;}}; int main() {D ob(4,2,5);}**please see question attached** (previous program below) #include <iostream>using namespace std;class House{//instance variablesprivate:string location;int price; public://constructorsHouse(){location = "TBD";price = 0;}House(string location,int price){this->location = location;this->price = price;}//Get and set methodsvoid setLocation(string location){this->location = location;}string getLocation(){return location;}void setPrice(int price){this->price = price;}int getPrice(){return price;} };//member functionvoid output(House a){cout <<"Location: " << a.getLocation()<<endl;cout <<"Price: "<<a.getPrice()<<endl;}int main(){House a("1234 qcc st, Bayside, NY",1000000);output(a);House b;output(b); return 0;}QI: (a) Find the errors in the following also explain what causes the error class Student int getid() private: int *id; int semester; string name; double cgpa; static int totalStudent; return *id; double getCgpa() return cgpas public: static int getSemester() Student () { id = new int(); name = ""; cgpa = e; totalStudent++ return semester; void setCgpa(int c) const cgpa = c; void setSection(char sec) Student (int *i,int s,string n, double c) id = i; section = sec; static int getTotalStudent() semester = s; name = ""; cgpa = e; totalstudent++; totalStudent =5; return totalStudent;