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- Which one is true? A) An inner class can be declared public or private subject to the same visibility rules applied to a member of the class. B)An inner class can be declared static. A static inner class can be accessed using the outer class name. A static inner class cannot access non-static members of the outer class. C)An inner class supports the work of its containing outer class and is compiled into a class named OuterClassName$InnerClassName.class. D)Inner classes can make programs simple and concise.a. What is the concept of binding? Differentiate between early binding and late binding. (Write inmaximum 5 lines) [5 Marks]b. Write a Java operator/keyword, which can be used to check the validity of reference before attemptingdown-casting from superclass object to subclass reference. Given an example of it usage. (Write inmaximum 5 lines)Assume that you have created a class named MyClass, and that a working program contains the following statement:output MyClass.numberWhich of the following do you know?a. number is a numeric field.b. number is a static field.c. number is an instance variable.d. all of the above
- B elow for each class you find a UML and description of the public interface. Implementing the public interface as described is madatory. There's freedom on how to implement these classes.The private properties and private methods are under your control.. There are multiple ways of implementing all these classes. Feel free to add private properties and methods. For each object, it's mandatory to create a header file (.h), implementation file (.cpp) and a driver. Blank files are included. The header should have the class definition in it. The implementation file should contain the implementations of the methods laid out in the header fine. And finally the Driver should test/demonstrate all the features of the class. It's best to develop the driver as the class is being written. Check each section to see if there are added additional requirements for the driver. Two test suites are included so that work can be checked. It's important to implement the drivers to test and demonstrate…Exercise 7.13 JHTP (Date Class): Create a class called Date that includes 3 instance variables—a month (type int), a day (type int), and a year (type int). Provide a constructor that initializes the 3 instance variables and assumes 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(/). Write a test application named DateTest that demonstrates class Date’s capabilities. Java codeH1. Q2 Create a class Account class with balance as a data member. Create two constructors (no argument, and two arguments) and methods to withdraw and deposit balance. Subject: OOP in JAVA Please give typed answer
- Ans8 izt--7 Write the following Book class:A Book has-a title, ISBN number, author and price.o Include the following:o All instance fields (variables)o Two Constructors: a default constructor and onerequiring all fields as parameterso Methods – an accessor and mutator for each instancefieldso Create two Book objects with title, isbn, author andpriceo Print the information about the bookso Change the price of both books.o Reprint the information about the books.Question: Choose the correct one. Note: Give me all the answers without explanation. 1.It is an instance of the class Select one: a. Method b. Object c. Data member d. Constructor 2.The encapsulation concept means. Select one: a. The class has private constructors and methods b. The data members are public access c. The data members are private access d. you can't access the members of the class even from the class itself 3.char A[]="hahahah"; char* p=&A[0]; *p='na'; p="CII"; cout<<A; the output is. Select one: a. CIIhahahah b. hahahah c. aahahah d. nahahah 4.Let A is char array as follows: char A[]=”hahahah”; the length of A Select one: a. 32 characters b. 7 characters c. 28 characters d. 8 characters 5.class A{int x;}; class B:public A{int y;public: void add(){y=++x;}};to correct the error. Select one: a. We should use protected: in class A b. We should use private: in class A c. We should use protected: in class B d. We should use public: in class B…Question 1. Given the properties and default no-arg constructor for a SmartPhone class, write a constructor that sets both properties class SmartPhone { private string _number; private string _operatingSystem; // Constructors public SmartPhone() { Number = "+1(000)000-0000"; OperatingSystem = ""; } public string Number { get => _number; set => _number = value; } public string OperatingSystem { get => _operatingSystem; set => _operatingSystem = value; } ... Fill in the blanks for the Constructor: public SmartPhone (__________) { ___________ ______________ } -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- Exercise 7.13 JHTP (Date Class): Create a class called Date that includes 3 instance variables—a month (type int), a day (type int), and a year (type int). Provide a constructor that initializes the 3 instance variables and assumes 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(/). Write a test application named DateTest that demonstrates class Date’s capabilities.question 1 C++: Write a class whose objects each represent a piece of chewing gum. The only attribute an object will have is weight. Also, the class has to include the following services for its objects: -determine if two chewing gums are the same-change the weight of the gum-get the weight of the gum-display gum information The code must include the following: - a default constructor - a copy constructor - a destructor - an = operator - set - get - a == operator - and a << operator Full explain this morning and text typing work only thanksCreate three classes Person, Professor and Student. Theclass Person should have data members name and age. Theclasses Professor and Student should inherit from theclass Person.The class Professor should have two integermembers: publications and cur_id. There will be two memberfunctions: getdata and putdata. The function getdata shouldget the input from the user: the name, age and publications ofthe professor. The function putdata should print the name,age, publications and the cur_id of the professor.The class Student should have two data members: marks,which is an array of size 6 and cur_id. It has two memberfunctions: getdata and putdata. The function getdata shouldget the input from the user: the name, age, and the marks ofthe student in 6 subjects. The function putdata should print 1,2,3,4,5,6,7,8,10,11 Students canbe able todevelop theProfessionalDataMaintenanceSystem. the name, age, sum of the marks and the cur_id of the student.For each object being created of the Professor…