polymorphism can be achieved through___ when a method defined in a superclass or interface is re-defined by one of its subclasses, thus modifying/replacing the behavior the superclass provides.
a.overwriting
b.overloading
c.overriding
d.loading
polymorphism can be achieved through overriding when a method defined in a superclass or interface is re-defined by one of its subclasses, thus modifying/replacing the behavior the superclass provides.
overriding
polymorphism can be achieved through___ when a method defined in a superclass or interface is re-defined...
I want to write a superclass with one private attribute and one method in JAVA The super class will later derive into 2 subclasses each with its own private attributes and each with a method that OVERRIDES the superclass method with each subclasses with one method ( that will do something) unique to that subclass. ALL classes must have constructors initializing its attributes and getter/setter methods. Then, in the main method, keep initializing objects of type superclasses based on user's...
Exercise 8 (The interface class-like) Assume you have the Edible interface with its abstract method Design a class named Animal and its two subclasses named Mammal and Dairy. Make Sheep and Bear as subclasses of Mammal and make Chicken and Cow as subclasses of Dairy. The Sheep and Dairy classes implement the Edible interface. howToEat) and sound() are the main two methods for all edible classes while sound() is the main method for the non-edible classes. 1. Draw the UML...
(The interface class-like) Assume you have the Edible interface with its abstract method. Design a class named Animal and its two subclasses named Mammal and Dairy. Make Sheep and Bear as subclasses of Mammal and make implement the Edible interface. howToEat() and sound() are the main two methods for all edible classes while sound() is the main method for the non-edible classes. 1. Draw the UML diagram for the classes and the interface 2. Use Arraylist class to create an...
A subclass method can _____ a superclass method with the same name and parameter types. Select one: a. extend b. override c. inherit d. implement e. abstract
Java Questions A class must implement at least one interface. Question 1 options: True False Question 2 (1 point) Abstract methods can be called. Question 2 options: True False Question 3 (1 point) Constructors Question 3 options: Are inherited but cannot be accessed Are inherited and can be accessed Are accessible but are not inherited Are not inherited and cannot be accessed Question 4 (1 point) We can instantiate an object from an abstract class. Question 4 options: True False...
1. When a sub class object is created, when is the call to the super class constructor made? How does a programmer call the super class constructor from the sub class? What do all classes indirectly extend? What methods does every class inherit from the Object class? 2. When writing methods in a sub class, how can those methods call the methods from the parent class? 3. Which class is more specific, a super class or a sub class? 4. ...
Can someone please help with this in JAVA? Write one application program by using the following requirements: 1) Exception handling 2) Inheritance a) At least one superclass or abstract superclass: this class needs to have data members, accessor, mutator, and toString methods b) At least one subclass: this class also needs to have data members, accessor, mutator, and toString methods c) At least one interface: this interface needs to have at least two abstract methods d) At least one method...
true or false in JAVA 1) A literal value is a value that is typed directly into the code, such as 10, 14.6, or "Bob". 2) Local variables can only be accessed from within the block in which they are defined. 3) All variables must be declared before they can be used. 4) If a method returns nothing, its return type should be null. 5) A method with an int parameter can be invoked with a String argument. 6) A...
Creating a Shell Interface Using Java This project consists of modifying a Java program so that it serves as a shell interface that accepts user commands and then executes each command in a separate process external to the Java virtual machine. Overview A shell interface provides the user with a prompt, after which the user enters the next command. The example below illustrates the prompt jsh> and the user’s next command: cat Prog.java. This command displays the file Prog.java on...
Create a CircularArrayQueue<E> implementation of the Queue<E> interface defined in class. Hints: You will need two index variables to keep track of the start and the end of the queue. Consider the queue to be empty when the front/back index pointers are equal (which means that the 'back' pointer will always be pointing at the next place to add an item). Be careful of index increments and decrements; make sure you perform the operations necessary to make the pointers loop...