Q2. Write two Java classes: Student and Main as follow: Class Student: A. Create three private variables: Name, ID and Specialization. B. Define set and get methods for the variable Name. C. Override the toString method to display the class instances. Class Main: A. Define the main method B. Define an array of the class Student with a size of 10. C. Use the loop for data entry in each object. D. Print all objects values.
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- Write a java program Write a class named Employee with name and salary as private data fields. Add a constructor with both parameters. Write a class named Manager which unherits the Employee class. Add an instance variable, named department, of type String and 15 private. Add a constructor in the subclass class and a toString () method that prints the manager's name, department, and salary [Hint: Add a tastanel) method in the super class as well]. Create objects of Manager and Employee dassUsing JAVA write a code to: Implement a class Person with a name and a year of birth. Add a class Student that inherits from Person and has a major. Add a class Instructor that inherits from Person and has a salary. For each class, write the needed constructors, getters, setters, and a toString method that stringifies the instance variables in a readable format. Supply a test program that instantiates an instance of each class and exercises each method defined for the class.We have a parking office class for an object-oriented parking management system using java Add (implement )a method to the Parking Office class to return a collection of customer ids (getCustomerIds) using java Please write an error-free code I have attached two class diagrams with definitions of all related classes in our system (i.e car, customer, .....). N.B. Parking office methods in the class defination like register, getcustomer and addcharge have already been implemented, we just need an additional getcustomerID method as mentioned above
- use java (ArrayList, inheritance, polymorphism, File I/O and basic Java) Student class: First, you need to design, code in Java, test and document a base class, Student. The Student class will have the following information, and all of these should be defined as Private: A first name (given name) A last name (family name/surname) Student number (ID) – an integer number (of type long) The Student class will have at least the following constructors and methods: (i) two constructors - one without any parameters (the default constructor), and one with parameters to give initial values to all the instance variables of Student. (ii) only necessary set and get methods for a valid class design. (iii) a reportGrade method, which you have nothing to report here, you can just print to the screen a message “There is no grade here.”. This method will be overridden in the respective child classes. (iv) an equals method which compares two student objects and returns true if they…5. Given the Java Point class (which contains two private variables x and y and constructors that allows creating a point object with known x and y values as well as other methods such as equals( ), toString( ) etc), (a). define a new class called Circle that contains private two variables: center which is a Point object from the Point class and radius which is of type double. The Circle class must have the following methods: (b). add a constructor which creates a circle object using a center point with x and y values and a radius as its parameters. (c). add a default constructor. ( (d). add an equals() method that can compare if any object is equal to a Circle object (two circle objects are equal if they have the same center point with the same radius). (e). add a toString() method that prints a Circle object with the center point and radius.Do the following program in Java Eclipse. Java Class that can be used to create a Fruit object as described below: A fruit has - a: - Date of Harvest -Color -Weight -Number of seeds a. Add all instance variables. b. The class must have getters and setters for all instance variables. c. The class must have two constructors, a no-args and a constructor that receives input for each instance variables. d. The parent class is abstract. e. its 1 abstract method and has toString() method f. its 2 children (concrete) also have toString() methods.
- Can someone help in java Create a class Hotel with member data, hotel name and category (number of stars).For the Hotel class, write the standard methods (constructors, get & set, toString ()) and the getWiFi () method, which returns the wifi address formed by the first 4 letters of the hotel name and any number (you can get it with the random number generator) .In main (), illustrate the use of the Hotel class. Create a PopulatedHotel class, successor to the Hotel with an additional ArrayList <> field on behalf of the hotel guests.For the PopulatedHotel class, write standard methods (constructors, get & set, toString ()), with the get and set methods working with separate elements of ArrayList <>. For the PopulatedHotel class, also write methods for adding and removing a guest and a method for checking that a person is staying at the hotel. In main (), illustrate the use of the PopulatedHotel class.Create a complete Java class that can be used to create a Computer object as described below:A Computer has a:- Manufacturer- Disk Size- Manufacturing Date- Number of coresa) Add all instance variables (data encapsulation is expected).b) The class must have getters and setters for all instance variables.c) The class must have two constructors: a no-arg constructor and a constructor thatreceives input parameters for each instance variable.d) Implement a toString() method for your class.1. Create a new Java class named Student that has the following fields o yearOfAdmission - The yearOfAdmission field is an calendar data type that holds the year of admitting the student (e.g. 2021) o Name - The name field is a String object that holds the name of the student (e.g. “Ahlam") o Address – The address field is a String that holds the address of the student (e.g. “AlHail”) 2. In addition to that, the student class should have the following methods. o Constructor - The constructor should accept yearOfAdmission, name, and Address as arguments ▪ These values should be used to initialize the year of admitting student, name of the student, and Address fields. o Getter Methods - Write three accessor (getter) methods to get the values stored in an object's fields ▪ getYear(), getName(), get Address () Below code is a hint to get you started. public class Student { private int yearOfRegistrn; private String Name; private String Address; // Constructor public…
- java Write a simple class to represent a Student. Each student object should have the following data items: A first natne, a lasl name, a student ID, and a GPA. Think carefully about how you should model this data and write getter (query) and setter (command) methods for each. Override public boolean equals(Object o) so that two student objects that have the same student ID are seen as equalIn Java Programming: Example, 8-8, defined the class Person to store the name of a person. The methods that we included merely set the name and print the name of a person. Redefine the class Person so that, in addition to what the existing class does, ypu can: 1. Set the last name only. 2. Set the first name only. 3 Set the middle name. 4. Check whether a given last name is the same as the last name of this person. 5. Check wether a given first name is the same as the first name of this person. 6. Check whether a given middle name is the same as the middle name of thi person. 7. Add the method equals that returns true if two objects contain the same first, middle, and last name. 8. Add the method makeCopy that copies the instance variables of a Person object into another Person object. 9. Add the method getCopy that creates and returns the address of the object, which is a copy of another Person object. 10. Add a copy constructor. 11. Write the definitions of the methods of the class…Answer this mcq 12) Java has a way of officially hiding details of a class definition. To hide details, you mark them as _________. public protected private all of the above Answer