Design a class named QuadraticEquation for a quadratic equation ax² + bx+c= 0. The class contains: ▪ Private data fields a, b, and c that represent three coefficients. ▪ A constructor with the arguments for a, b, and c. ▪ Three getter methods for a, b, and c. ▪ A method named getDiscriminant () that returns the discriminant, which is b² - 4ac. ▪ The methods named getRoot1 () and getRoot2() for returning two roots
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- public class date { private int day; // from 1 to 31 private int month; // from 1 to 12 private int year; // from 2000 upwards public void advance (); // move to next day }; Implement a constructor that initializes new objects of date class to be set to the 1st of January 2000. Implement setters for day, month, and year. Implement the advance method, which moves to the next day, ensuring that all data members are updated appropriately.Design a class named LinearEquation for a 2x2 system of linear equations: ax + by = ecx + dy = f x = (ed - bf)/(ad - bc ) y = (af - ec)/(ad-bc) The class contains:■ The private data fields a, b, c, d, e, and f with get methods.■ A constructor with the arguments for a, b, c, d, e, and f.■ Six get methods for a, b, c, d, e, and f.■ A method named isSolvable() that returns true if is not 0.■ The methods getX() and getY() that return the solution for the equation.Draw the UML diagram for the class, and then implement the class. Write a test program that prompts the user to enter a, b, c, d, e, and f and displays the result. If is 0, report that “The equation has no solution.”Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get methods. A data field radius with a get method. A no-arg constructor that creates a default circle with (0, 0) for (x, y) and 1 for radius. A constructor that creates a circle with the specified x, y, and radius. A method getArea() that returns the area of the circle. A method getPerimeter() that returns the perimeter of the circle. A method contains(double x, double y) that returns true if the specified point (x, y) is inside this circle. See Figure 10.14(a). A method contains(Circle2D circle) that returns true if the specified circle is inside this circle. See Figure 10.14(b). A method overlaps(Circle2D circle) that returns true if the specified circle overlaps with this circle. See the figure below. Figure (a) A point is inside the circle. (b) A circle is inside another circle. (c) A circle overlaps another circle. Draw the UML diagram for the class.…
- Define the Circle2DYourLastName class that contains: Two double data fields names x and y that specify the center of the circle withgetter methods. A double data field radius with getter method. A constructor that creates a circle with specified x, y, and radius. A method findTypeOfIntersection to determine and return types ofintersection as string (contained, overlap, or separate).Design a user class that prompts the user to enter the coordinates of the center andradius of two circles and displays the type of intersection. Allow the user to repeat yourprogram using a ConfirmDialog Box.Create a Matrix class and implement the following member functions: The constructors and the destructor getSize() which returns the size of the matrix; setValue( int position, int value) which sets the value in the matrix at given position; getValue (int position) which returns the current value at given position; an add method which adds two matrices together; A= ● ● a subtract method which subtract two matrices together; a multiply methods which multiplies two matrices together, if possible; an overlap function which overlaps two matrices together. The augment function takes two matrices A and B of size mlxnl and m2xn2, respectively, and produce a new matrix C of size mLxnL, where mL (resp. nL) is the largest between m1 and m2 (resp. nl and n2). The values of C will either come from the original matrices by overlapping matrix B over matrix A. Wherever a value is not available it initialized to default value 0. For example: If you overlap two matrices A of size 4x2 and B of size 3x5,…In c++Create a lecturer class with member-data name (name) and department (department). For the Lecturer class, write constructors, get & set methods, and the toString () method, which returns the textual description of the object. Write a Lecture class with data member:- subject (discipline)- weekday (day of the week when it takes place)- hour (start time, integer)- online (boolean value, whether remote or not)- lecturer (object of class Lecturer)For the Lecture class, write:- constructors- get & set methods- method isItMorning (), returning a Boolean value, the result of checking whether the lecture starts at 7-11- give a new implementation of the toString () method so that it returns the text description of the Lecture objectIn the test function main ()1. Create objects of both classes and illustrate the use of all possible methods for them.2. Create an array of Lecture objects and display it on the screen and in a file.
- Design a class named LinearEquation for a 2-by-2 system of linear equations:ax + by = e x=(ed-bf)/(ad-bc)cx + dy = f y=(af-ec)/(ad-bc)The class contains:• Private double data fields a, b, c, d, e, and f.• A constructor with the arguments for a, b, c, d, e, and f.• Six getter methods for a, b, c, d, e, and f.• Methods getX() and getY() that return the solution for the equation.• A method named isSolvable() that returns true if ad - bc is not 0. The method isSolvable() willbe called in the main, if it returns true display the calculated values for x and y by calling getX()and getY(). If the call to isSolvable() returns false, display a message that “the equation has nosolution”.Write a test Java program that prompts the user to enter a, b, c, d, e, and f and displays the result. After the valuesfor a through f are entered, create a LinearEquation object. Check to seeIf ad - bc is 0, report that “The equation has no solution”, otherwise print out the values for x and y.Write a class Point for 2D Cartesian co-ordinates. The class should have 2 fields: abscissa(x) and ordinately). The class should have a method which takes a Point object as parameter and finds the distance between the two points (calling object & argument). The class should also have a static method that takes 2 point objects and returns their midpoint as a new Point object. (No driver class or no other methods required) The distance (d) between 2 points (x1, y1) and (x2, y2) is given by: d = (x1 – x2)2 + (y1 – y2)² The midpoint (x3, y3) between 2 points (x1, y1) and (x2, y2) is given by: x3 = (x1+x2)/2 y3 = (y1+y2)/2Search for textbooks, step-by-step expl = bartleby e Q&A Library Design a class nam Start your trial Design a class named MyPoint to represent a point with X-and y-coordinates. The class contains: The data fields x and y that represent the coordinates with getter methods. A no-arg constructor that creates a point (0, 0). A constructor that constructs a point with specified coordinates. A method named distance that returns the distance from this point to a specified point of the MyPoint type. A method named distance that returns the distance from this point to another point with specified x- and y-coordinates. A static method named distance that returns the distance from two MyPoint objects. Draw the UML diagram for the class then implement the class. Write a test program that creates the two points (0, 0) and (10, 30.5) and displays the distance between them. O16 W MacR eok
- hello! can you help debug my program? it's in Java! here are the errors I'm getting: line 189: total_weight cannot be resolved or is not a fieldline 93: the type Snake must implement the inherited abstract method Animal.makeNoise()line 139: the method actual_num_animals(int) is undefined for the type Zooline 152: the left-hand side of an assignment must be a variableline 169: syntax error, insert } to complete Blockline 152: syntax error, insert “. class” to complete expressionline 139: syntax error on token “<“, ( expectedline 139: syntax error on token “{“ invalid AssignmentOperatorline 152: i cannot be resolved to a variableline 152: i cannot be resolved to a variableline 154: i cannot be resolved to a variable here is my code: package zoo; public abstract class Animal { private String name; private double weight; private int age; public Animal() { name=""; weight=0; age=0; } public Animal(String name, double weight, int age) { this.name = name; this.weight = weight;…Abstract in Java Employee Override the display method in the Person class override the toString() and equals() methods Define method earnings as abstract with a return type of double. Hourly Employee provide the setters and getters of your data members provide call to parent contructors earnings is computed by having the product of the total number of hours worked and the rate. but if the number of hours worked exceeds 40, the rate increases to 150% of the current rate. (ex. rate=200; 150% = 300) override the toString() and equals() methods Note:Class Person is already loaded in this activity. No need to add the class in your code.Course Title: Modern Programming Language Please Java Language Code Question : Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method. Design Rectangle18-ARID-2891 and CircleM.JibranAkram Classes as children of GeometricObject class with overridden toString() method to return “Rectangle with w Width and h Height is drawn” OR “Circle with r Radius is drawn”. The attributes of Rectangle are length, width. The attribute of Circle is radius Hint: Area of circle=πr2 , Area of rectangle= width*length