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- java OverviewIn this assignment, you will create a class Publisher (publisher) and two test classes that create a number of different objects / instances of Publisher. The purpose of the task is to get acquainted with the concepts of object, class, method, constructor and overlay.TaskYou must write a class that represents a publisher (which will then be used in the next assignment). You rename the class to Publisher and are consequently saved in a source file called Publisher.java. The class must contain information about the publisher's name and telephone number.The operations we should be able to perform on objects of the class are to set and retrieve names and set and retrieve telephone numbers. It should also be possible to print all information about a publisher on the screen. In addition to this, the class must also contain a static instance variable for counting the number of created publishers, as well as a method that returns the number of created publishers.You should also…Exercise 1-Account class • Design a class named Account that contains : • A private int data field named id for the account • A private double data field named balance for the account • A privet Date data field named dateCreated that stores the date when the account was created • A no-arg constructor that creates a default account • A constructor that creates an account with the specified id and initial balance • The getters (i.e., accessors) and setters (i.e., mutators) methods for id and balance • The getter method for dateCreated • A method named withdraw that withdraws a specified amount from the account • A method named deposit that deposits a specified amount to the accountQuestion Workspace a. The Downdog Yoga Studio offers five types of classes, as shown in the Table Attached. Design a program that accepts a number representing a class and then displays the name of the class. b. Modify the Downdog Yoga Studio program so that numeric class requests can be entered continuously until a sentinel value is entered. Then display each class number, name, and a count of the number of requests for each class.
- Define a class named Employee. This class should extend the Person class from the previous question. The class should have a constructor, which takes the name, age, employer (String) and salary (int) as parameters (in that order). The first two parameters should be passed to the constructor of the superclass and the value of the last two parameters should be stored in instance variables. The class should define the methods, getSalary which returns the salary of the employee and getEmployer which returns the name of the employer. Any methods from the previous question that need to be overridden should be overridden! Use super and instanceof as appropriate. I.e., for the following methods you should be able to call the method in the superclass for specific situations (e.g. the compareTo method in the superclass can be called if you receive anything other than an Employee, and this also holds for the equals method). The toString method only needs to append details and as such can also…A registration officer in an academic institution wants to display the Student transcript in a given semesterafter entering the required student details. A student is characterized by an ID, full name, the semester inwhich he/she is registered and other details. The student can take from 3 to 4 modules every semesterand has two assessments in each module.You are requested to write the program that will help the officer to display the indicated transcript usingClasses, methods, arrays and various control statements. Create the class Student, which must have a normalconstructor and at least 5 attributes. attributes: ID , full name, Semester Gender , Age (JAVA)hi agen A registration officer in an academic institution wants to display the Student transcript in a given semesterafter entering the required student details. A student is characterized by an ID, full name, the semester inwhich he/she is registered and other details. The student can take from 3 to 4 modules every semesterand has two assessments in each module.You are requested to write the program that will help the officer to display the indicated transcript usingClasses, methods, arrays and various control statements 1)Explain the benefits of encapsulation in Object Oriented Programming. Include proper methods for setting and getting the attributes of the class Student. can u solve it for me thx
- 10. Please do in java code DJ classDesign, implement and test a DJ class. A DJ object has a name - djName and an isHired attribute (boolean). Also, a DJ object has 3 musicTypes. These are references to the Music class, where the musicType is declared. In Stage 2 you will be required to declare these 3 instance variables as 1 array.A DJ object can return the value of each of its attributes, and change the value of each of its attributes. It can also display itself in the form:Kongapa, Play List: Disco, Rap, Heavy Metal is hiredImpressions, Play List: House, Hip Hop, Jazz is availableC++ Create a class named Student that has three member variables:name – A string that stores the name of the studentnumClasses – An integer that tracks how many courses the student is currently enrolledinclassList – A dynamic array of strings used to store the names of the classes that thestudent is enrolled inWrite appropriate constructor(s), mutator, and accessor methods for the class along with thefollowing: A method that inputs all values from the user, including the list of class names. Thismethod will have to support input for an arbitrary number of classes. A method that outputs the name and list of all courses. A method that resets the number of classes to 0 and the classList to an empty list. An overloaded assignment operator that correctly makes a new copy of the list ofcourses. A destructor that releases all memory that has been allocated.Write a main method that tests all of your functions.refer to image (java) a.Write a Java statement that declares myObject1 to be a MyClass object and initializes its instance variable x to 5. b. Write a Java statement that declares myObject2 to be a MyClass object and initializes its instance variable x to 7. c. Identify each of the following statements as either valid or invalid (tell why it is invalid). Assume that myObject1 and myObject2 are declared as in parts (a) and (b). myObject1.MyClass( ); myObject2.setX(50); MyClass.printCount( ); MyClass.printX( ); MyClass.count++;
- Java question OverviewIn this assignment, you will create a class Publisher (publisher) and two test classes that create a number of different objects / instances of Publisher. The purpose of the task is to get acquainted with the concepts of object, class, method, constructor and overlay.TaskYou must write a class that represents a publisher (which will then be used in the next assignment). You rename the class to Publisher and are consequently saved in a source file called Publisher.java. The class must contain information about the publisher's name and telephone number.The operations we should be able to perform on objects of the class are to set and retrieve names and set and retrieve telephone numbers. It should also be possible to print all information about a publisher on the screen. In addition to this, the class must also contain a static instance variable for counting the number of created publishers, as well as a method that returns the number of created publishers.You…Java program Overview In this task, you will try to create a class called Course and a test class that creates objects of the Course class. The purpose is to teach you to write classes, create objects of classes and call public methods on the created object. Task Write a class that represents a course given here at San University. The class must contain information about the course course code, name, number of credits and a description. This should be stored as instance variables in the class. Use English names for all variables and methods. All instance variables must use the String class as the data type. The instance variables may only be accessible within the own class. It must be possible to set new values for all instance variables in the class. This must be implemented with public set methods for all instance variables. There should also be a method that prints all information about the course on the screen in a "nice" and structured way. You must also write a "test class"…Define a new "Exam" class that manages the exam name (string) and its score (integer). For example, an exam can have - "Midterm Exam", 100 - "Final Exam", 50 The class must not provide the default constructor. It must require the exam name and score in order to initialize the Exam object. The class must provide only the following methods (no more and no less): - isPerfect method that returns true if the score is exactly 100 and false otherwise. - isPassing method that returns true if the score is equal or greater than 70 and false otherwise. - toString method must return all the exam information including the result of the exam as a string in the following format: EXAM(<name>) SCORE(<score>) RESULT(Pass/Fail) such asEXAM(Midterm Exam) SCORE(100) RESULT(Pass) EXAM(Final Exam) SCORE(50) RESULT(Fail) "Pass" means the score is greater or equal 70. "Fail" is whenever the score is below 70. - isGreater method that compares with another Exam object and return true if the score…