variable of a superclass object? Upcasting Downcasting Extensive casting Both b and c above
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- Which of the following statements are true? Group of answer choices 1. A superclass reimplements the functionality of its subclasses. 2. A class that implements an interface reuses the functionality of the interface. 3. A derived class reuses the functionality instead of reimplements it. 4. If a class has no bugs, we can inherit from it without fear of having any bugs in our class.Which of the following statement is not true? An anonymous inner class is compiled into a class named OuterClassName$InnerClassName.class An anonymous inner class must always extend a superclass or implement an interface, but it cannot have an explicit extends or implements clause. An anonymous inner class always uses the no-arg constructor from its superclass to create an instance. If an anonymous inner class implements an interface, the constructor is Object(). An anonymous inner class must implement all the abstract methods in the superclass or in the interface.10) Which of the following statements about inheritance is true? Subclasses cannot access private fields and methods of their superclass Subclasses can override private methods of their superclass Subclasses can only inherit methods from their superclass, not fields Subclasses inherit all public and protected fields and methods of their superclass 11) Polymorphism is the ability of an object to take on multiple _____ 12) What is method overloading in Java? Creating a new method with the same name and parameters as a method in a superclass None Creating a new method with the same name but different parameters in the same class Creating a new method with a different name and parameters as a method in a superclass
- 1. Create 2 interfaces: BankInterface and PetInterface. BankInterface contains only 1 abstract method: accountType() which does not return anything and takes 1 String argument: accType. PetInterface contains only 1 abstract method: petType() which does not return anything and takes 1 String argument petType. 2. Create an abstract class named Student. This class contains 2 instance variables, 1 constructor, and 2 abstract methods. a. Instance variables: stId and stName (Use must use appropriate data type.) b. A 2-argument constructor that will be called from its subclass (the concrete class) to load 2 instance variables of this level during the creation of an object in its subclass. c. 2 abstract methods: getStId and getStName.. Each of these methods, when sub classed into concrete ones, should return the respective values of the instance variables stId and stName. d. At this level you should do something to get the object state at this level. 3. Create a concrete class named…1. Create 2 interfaces: BankInterface and PetInterface. BankInterface contains only 1 abstract method: accountType() which does not return anything and takes 1 String argument: accType. PetInterface contains only 1 abstract method: petType() which does not return anything and takes 1 String argument petType. 2. Create an abstract class named Student. This class contains 2 instance variables, 1 constructor, and 2 abstract methods. a. Instance variables: stId and stName (Use must use appropriate data type.) b. A 2-argument constructor that will be called from its subclass (the concrete class) to load 2 instance variables of this level during the creation of an object in its subclass. c. 2 abstract methods: getStId and getStName.. Each of these methods, when sub classed into concrete ones, should return the respective values of the instance variables stId and stName. d. At this level you should do something to get the object state at this level. 3. Create a concrete class named…Which of the following is NOT a step in using inheritance to create a subclass? Add any new methods Modify the code for methods that change Delete the methods that do not change Duplicate redundant instance variables What is the syntax for the calling the __init__ method in the ArrayBag class from the ArraySortedBag class? self.init(ArrayBag, sourceCollection) ArrayBag.self(__init__, sourceCollection) __init__.ArrayBag(self, sourceCollection) ArrayBag.__init__(self, sourceCollection)
- Which of the following is an example of inheritance in Java? A class implementing multiple interfaces A subclass inheriting from a superclass A class using an interface to define behavior A class encapsulating data and methods What is the purpose of inheritance in Java? To define behavior of a class To provide access to interface methods To reuse code and avoid duplication To provide encapsulation of data and methods True or False An interface can have implementation code for its methods.Use the code provided copied to a new file named compulsory_task_1.py: 1. Add another method in the Course class that prints the head office location: Woodstock, Cape Town2. Create a subclass of the Course class named OOPCourse3. Create a constructor that initialises the following attributes and assigns these values: --- "description" with a value "OOP Fundamentals" --- "trainer" with a value "Mr Anon A. Mouse"4. Create a method in the subclass named "trainer_details" that prints what the course is about and the name of the trainer by using the description and trainer attributes.5. Create a method in the subclass named "show_course_id" that prints the ID number of the course: #123456. Create an object of the subclass called course_1 and call the following methods contact_details trainer_details show_course_id These methods should all print out the correct information to the terminal On a side note, this task covers single inheritance. multiple inheritance is also…The class names to be created are the following: Client (the main class that contains the main method and the implementation of the main menu) SavingsAccount (the subclass where attributes and methods are defined) BankAccount (the superclass where attributes and methods are defined) All class names must be suffixed with your last name. Client<your_last_name> ClientBlanco SavingsAccount<your_last_name> SavingsAccountBlanco BankAccount<your_last_name> BankAccountBlanco Compress the NetBeans project into .rar or .zip format and then upload to the link provided in the LMS. Only NetBeans project compressed in .rar or .zip format will be accepted. All other formats will be graded with 0. Write a Java program with the following specifications: Define the following attributes and methods of the BankAccount class: Attributes: accountName, address, birthday, contactNumber Constructor Setter and Getter methods getClientDetails method Define the…
- Which of the following is the correct syntax to indicate that class A is a subclass of B? a. public class B extends A { b. public class A : super B { c. public A(super B) { d. public class A extends B { e. public A implements B {Which of the following is an example of polymorphism in Java? A subclass inheriting from a superclass A class encapsulating data and methods A method accepting an object of a superclass as an argument A class implementing multiple interfacesWhich access modifier is generally used by all programming languages with access modifiers to declare the modified construct a part of the abstract data type's interface? public virtual protected private
