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Write a class Complex for complex number system. The class should have 2 fields for real and imaginary part. The class should have two methods:
- One takes 2 complex objects and returns their addition as a new complex object.
- Another takes 2 complex objects and returns their multiplication as a new complex objec
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- Write a class Complex for complex number system. The class should have 2 fields for real and imaginary part. The class should have two methods: 1. One takes 2 complex objects and returns their addition as a new complex object. 2. Another takes 2 complex objects and returns their multiplication as a new complex object Now create driver class with arbitrary values.A complex number has two parts: real value and imaginary value. In mathematics, we learnt how to add and multiply two complex numbers. Write a class Complex which will have two fields for real and imaginary values. The constructor will set the values in these fields (there could be multiple overloaded constructors). The class should also have method like this: Complex add (Complex c) This add() method takes a complex object and return a new complex object after adding the complex number c with itself(Use general complex number addition rule).QUESTION 1Write a class Complex for complex number system. The class should have 2 fields for real andimaginary part. The class should have two methods:1. One takes 2 complex objects and returns their addition as a new complex object.2. Another takes 2 complex objects and returns their multiplication as a new complex objectNow create driver class with arbitrary values. QUESTION 2Write a class about Aeroplane. Obviously, you will require other helper classes to complementyour aeroplane class. Design your classes yourself. The codes should contain the followingOOP features implemented in these classes:- Class- Object- Encapsulations- accessor/mutator- Method overloading- Objects as parameters- Objects as return type- Objects as fields- Association- Aggression- compositionBeside your code, comment the name of the feature that is implemented
- Java - Access Specifiers Create a class named Circle that has attributes radius, area, and circumference and make the attributes private. Make a public method that sets the radius and a method that prints all attributes. Ask the user input for radius. Note: Use the PI from the math functions Inputs A line containing an integer 10 Sample Output Radius: 20 Area: 1256.64 Circumference: 125.66Methods in Java Write a program that accepts three strings: first name, last name, age, and nationality. Create an object of the class Person and assign the inputs to their respective attributes. In the class, create a method greeting() that prints the attributes. Inputs 1. Input Cody Chum 20 Filipino Sample Output Enter first name: Cody Enter last name: Chum Enter age: 20 Enter nationality: Filipino Hello, I am Cody Chum, 20 years old and a Filipino!JAVACreate a class called Quadratic for representing a one-variable quadratic expression of the form: ax2 + bx + c a,b and c here are the coefficients. The class should contain the following methods: * A constructor that accepts values for a, b, and c. * public double getA() * public double getB() * public double getC() * public double evaluate (int x) * will return the value of the expression at point x * public double discriminant() - that will return (b2 - 4ac) * public boolean isImaginaryRoots() - roots are imaginary if (b2 - 4ac) < 0 * public boolean isRealRoots() - roots are real if (b2 - 4ac) >= 0 // these methods can only be invoked if the roots are not imaginary * public float firstRoot() * public float secondRoot() * public boolean isPerfectSquare(); // If the first and second roots are equal * Try to override the toString methods * Write a sample main program that will work as shown below. Example output: coefficient a: 4 coefficient b: 4 coefficient c: 1…
- In number theory, a value can be categorized as a natural number (a whole number >0, often denoted ℕ), an integer (zero or a positive or negative whole number, including the natural numbers, often denoted ℤ), or a real number (which includes the natural numbers and integers, along with all other positive and negative numbers that are not integers, often denoted ℝ). a) write a definition for a number class that contains: (i) A single field suitable for storing either a natural number, or an integer, or a real number; (ii) Setter and getter methods for manipulating this field; (iii) A constructor that initializes new objects of number to have the value 1 (unity); (iv) a method that determines which kind of number is currently stored (returning 0 if the number is real and an integer and a natural number, 1 if the number is real and integer but not a natural number, and 2 if the number is real but neither an integer nor a natural number) Java code neededIn this problem you will implement a simple library system based on object-oriented approach (using inheritance, polymorphism and abstract classes). At the library we have items and people are allowed to borrow them for a while or use them in the library premises. We have 3 types of items at the library. Books, Magazines and Compact Discs (CDs). All items have a unique number called serial number, shelf number that the item put on that shelf and shelf index, the index of the item at the shelf. Items at the library have additional different properties changing to item type. For example books have name, publisher name, and author name. CDs have title property and magazines have name, publisher properties. But people are allowed to borrow only books and CDs, but not magazines. Suppose that two kinds of people using library items. These are students and academic staff. Students can borrow only one item at a time, and academic stuffs can borrow at most 3 items at the same time. Also people…JAVA - PersonWrite the classes as shown in the following class diagram. Add a tester where you make an array of 5 person and ask the user to enter them. Then loop over the array and print them. The user may enter a Student, a Staff or even a Person. The ‘-‘ symbol means private field or method and ‘+’ means public. The classes Student and Staff inherit from Person
- In this exercise, you have to calculate the student's total marks using the concept of Classes Problem Statement# Write a Java class called Student with ● private fields: ○ name(String type) ○ mark1 and mark2 (double type) And methods: ● getMarks(int markNumber), a method which should return mark1 if markNumber equals 1 and mark2 otherwise. ● calcTotal() method should take the two marks entered and return their sum. Also define two constructors: ● A default constructor that takes no parameters and initializes the values to zeros and null. ● A constructor that takes the three variables and sets them as the values of the appropriate fields. Input# Name of the student and the marks obtained in the first and second tests Output# Sum of both marks Sample Input# Student student = new Student("Jack", 60, 70); Sample Output# getMarks(1) => 60 getMarks(2) => 70 calcTotal() => 130.0 Part of solution class Student { // Define private fields here public Student() { // Write…This Java code involves implementing a simple university personnel management program. The program contains three kinds of objects: Staff, Student, and Faculty. For each object, the program stores relevant information such as university ID, name, etc. Different information is stored depending on the type of object. For example, a student has a gpa, a faculty has a title and department (professor, mathematics). For each of any class data member, your program must include the getters and the setters, and each class must include at least two constructors. The main goal of this code is to demonstrate the use of inheritance, abstract classes, abstract methods, and method overriding. The Student class has the private attributes:- full name : String- id: String- gpa: double- Number of credit hours currently taken: int For a faculty, we need a: - full name: String- id: String- department (mathematics, engineering or english): String- Rank (professor or adjunct): String For a staff,…Programing language is Java. Define a class Person that represents a person. People have a name, an age, anda phone number. Since people always have a name and an age, your class shouldhave a constructor that has those as parameters. Define a toString() method whichdisplays all of the relevant information using a format like this: “Jim Lahey - Age 57- Phone 9025555555”.