FOR JAVA Create a class named Product that has ID, price and stock as fields. This class must have two constructors; one constructor must take all its fields as parameters, second constructor must take ID and price as parameters and set stock to 0. Also implement the following methods: • String toString(): Returns a brief summary about the object. • void sell(int): Takes a parameter that represents the amount to sell. Checks if stocks are sufficient. If so, it updates the stock and prints the total price. Else it prints a warning to user. Create 3 instances of Product class and test your methods.
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FOR JAVA
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Create a class named Product that has ID, price and stock as fields. This class must have two constructors; one constructor must take all its fields as parameters, second constructor must take ID and price as parameters and set stock to 0. Also implement the following methods:
• String toString(): Returns a brief summary about the object.
• void sell(int): Takes a parameter that represents the amount to sell. Checks if stocks are sufficient. If so, it updates the stock and prints the total price. Else it prints a warning to user.
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Create 3 instances of Product class and test your methods.
Step by step
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- In this exercise, you have to implement a calculator which can perform addition, subtraction, multiplication, and division. Problem Statement# Write a Java class called Calculator with ● private fields: ○ num1 and num2 (double type) And methods: ● add(), a method which returns the addition of two numbers ● subtract(), a method which returns the subtraction of num1 from num2 ● multiply(), a method which returns the multiplication of numbers ● divide(), a method which returns the division of num2 by num1 ● Define a parameterized constructor which takes two parameters num1 and num2 and assigns these variables to the respective fields in the class. Input# Pass double point numbers in the parameterized constructor Output# addition, subtraction, division, and multiplication Sample Input# Calculator obj = new Calculator(10, 94); obj.add() obj.subtract() obj.multiply() obj.divide() Sample Output# 104 84 940 9.4 Part of the Solution class Calculator { // write class fields here public…Java Use eclipse for this exercise. Create a class for pets. There should be fields for name, name of owner, species (dog, cat, etc.), breed (basset hound, domestic shorthair, etc.), age (a double), and weight (a double). Create a default constructor that does nothing and a constructor that will initialize all fields using values passed in as parms. Create a method isSpecies which has one parm, a String. Return true if the species in this is the same as the parm, otherwise return false. For example, if the parm is "hamster", then the method will return true if this is a hamster, and will return false if it's not. Create a toString method that returns a String containing all fields. You can create a multi-line String by including newlines; make sure the String is nicely formatted. Do NOT create any set or get methods. Client/demo/driver code (in a separate class): Write a method to read Pets from a file. The method will have one parm which is an array of Pets. The input file is named…Write a public int method named initialNumberOfSticks which takes two int parameters named max_sticks and min_sticks and returns a random integer value between max_sticks and min_sticks (inclusive). You will create a new instance of the Random class and call it r. Use the nextInt method of r to a get random value within a desired range and use it to compute the value that will be returned. Your method must be a syntactically correct Java method.
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- 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…FOR JAVA Implement the following classes in Java. Animal class that has a private field called age, two constructors (one default and one with parameter) and following methods: – ageUp method which increments the age by one. – move method which returns ”I’m moving.”– getters, setters and toString methods Spider class which extends the Animal class that has isVenomous field, two constructors (one default and one with parameter) (please make sure you are using super class’s constructors) and following methods: – move method which is overriden to return ”I’m walking.” – getters, setters and toString methods Bird class which extends the Animal class that has wingspan field, two constructors (one default and one with parameter) (please make sure you are using super class’s constructors) and following methods: – move method which is overriden to return ”I’m flying.” – getters, setters and toString methods 2. Create a Test class, in the main method create at least one instance of…Write a Java class called HotelRoom that represents a hotel room. The class will contain the following attributes: •RoomNo (int) •PhoneNumber (string) •Capacity (int) – Number of people that room can accommodate. •Grade (int) – Grade of room ranging 1-5, 5 being most valuable. Your class should have a constructor that takes a single parameter: RoomNo. The necessary accessors (i.e. get methods) and mutators (i.e. set methods) for class variables: Room number only accessor Phone number both mutator and accessor Capacity both mutator and accessor Grade both mutator and accessor 2.Write a Java class called Hotel that represents a hotel. The class will contain the following attributes: •Name (string) •ReceptionPhone (string) •RoomList (ArrayList of HotelRoom's) hotel class should have a constructor that takes two parameters: Hotel name and reception phone. The necessary accessors (i.e. get methods) and mutators (i.e. set methods) for class variables: Hotel name only accessor Reception phone…
- ANSWER IN JAVA Create a class called Date that includes three instance variables-a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Add a main method to the class that demonstrates class Date's capabilities.Please write it in Java Write a class definition of a class named 'Value' with the following: a constructor accepting a single integer parameter a constructor with no parameters a method 'setVal' that accepts a single parameter, a boolean method, 'wasModified' that returns true if setVal was ever called for the object. a method 'getVal' that returns an integer value as follows: if setVal has ever been called, it getVal returns the last value passed to setVal. Otherwise if the "single int parameter" constructor was used to create the object, getVal returns the value passed to that constructor. Otherwise getVal returns 0. Please write it in Java. Most of the answers that can be searched using Google are not correct for this question.I tried to get this answered before but I couldn't get the code to work fully from what he gave me. " //Definition of class rectangle public class Rectangle { //Declare required variables private double w; private double h; //No-argument constructor public Rectangle() { //Assign "w" to "1" w = 1; //Assign "h" to "1" h = 1; } //Parameterized constructor public Rectangle(double wid, double ht) { //Assign "wid" to "w" this.w = wid; //Assign "ht" to "w" this.h = ht; } //Method definition for width public double getWidth() { //Return width return w; } //Method definition for height public double getHeight() { //Return height return h; } //Method definition for perimeter public double getPerimeter() { //Return the perimeter return 2.0*(w + h); } //Method definition for area public double getArea() { //Return the area return w*h; } }//Definition of test class public class Test { //Definition of main class public static void main(String[] args) { //Create an object for rectangle class…