public class Rational private int numerator; private int denominator; public Rational (int numerator, ini this.numerator numerator; this.denominator denominato
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- in java Re-implement the Rational class : class Rational {private int numerator;private int denominator;public Rational(int num, int den) {numerator = num;denominator = den;}public Rational add(Rational o) {int NumResult = numerator * o.denominator + denominator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational sub(Rational o) {int NumResult = numerator * o.denominator - denominator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational mul(Rational o) {int NumResult = numerator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational div(Rational o) {int NumResult = numerator * o.denominator;int DenResult = denominator * o.numerator;return simplify(NumResult, DenResult);}private int gcd(int a, int b) {if (b == 0)return a;return gcd(b, a % b);}private Rational simplify(int num, int den) {int gcdValue =…Given that a method receives three parameters a, b, c, of type double, write some code, to be included as part of the method, that determines whether the value of "b squared" – 4ac is negative. If negative, the code prints out the message "no real solutions" and returns from the method MyProgrammingLab JavaJAVACreate 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…
- Methods 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!With graphical method pleaseProvide the UML class diagram for your Fraction class in the following program class Fraction { private double numerator; private double denominator; // Getter and setter method for numerator public double getDecimalValue() { return numerator / denominator; } public double getNumerator() { return numerator; } public void setNumerator(double numerator) { this.numerator = numerator; } // Getter and setter method for denominator public double getDenominator() { return denominator; } public void setDenominator(double denominator) { this.denominator = denominator; } //method isZero() public boolean isZero() { boolean isZero = false; //check if numerator is zero or not if (numerator == 0) { isZero = true; } return isZero;…
- Can you implement the Derived Class Parameterized constructor? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first. Implement the constructor Dell(String name) of the Derived Class Dell which takes a string, name. We have already implemented the Base Class Laptop with the member function getName() and a parameterized constructor. Input# Laptop name is being passed through the parameterized constructor. Output# getName() method is returing Laptop name. Sample Input# Dell dell = new Dell("Dell Inspiron"); Sample Output# "Dell Inspiron"Complete the method in Java. Name of the public class is Assignment1.javaWrite the source code of the class Passenger. A passenger can travel with an infant (i.e. his/her child). Code the class Infant as an inner class of the class Passenger. If a passenger is not travelling with an infant, the getInfantMonths method must return –1.
- / Fill in the missing code for the Range class below. Upload your Range.java. public class Range { private int minimum, maximum; // Set this.minimum and this.maximum to parameters // minimum and maximum, respectively, assuming minimum <= maximum. // Otherwise set both this.minimum and this.maximum to 0. public Range(int minimum, int maximum) { } // Call the two-parameter constructor with parameters 0 and maximum. public Range(int maximum) { } // Call the one-parameter constructor with parameter 100. public Range() { } // getter for maximum public int getMaximum() { } // getter for minimum public int getMinimum() { } // return the number of values in this range. public int getSize() { } // Set this.minimum to minimum, assuming…Using explicit constructor can avoid type conversions. Group of answer choices True FalseJava program Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager’s name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.