Homework Answers
83.To Create a Subclass,use the extends keyword .
84.Regarding inheritance
- when creating a subclass, no methods of a superclass can be overridden is true .
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Question 83 (1 point) To create a subclass, use the ___ keyword. extends implements interface inherits...
In Java Which of the following statements declares Salaried as a subclass of payType? Public class...
In Java Which of the following statements declares Salaried as a subclass of payType? Public class Salaried implements PayType Public class Salaried derivedFrom(payType) Public class PayType derives Salaried Public class Salaried extends PayType If a method in a subclass has the same signature as a method in the superclass, the subclass method overrides the superclass method. False True When a subclass overloads a superclass method………. Only the subclass method may be called with a subclass object Only the superclass method...
(1) ____ is the principle that allows you to apply your knowledge of a general category...
(1) ____ is the principle that allows you to apply your knowledge of a general category to more specific objects. a. Inheritance c. Encapsulation b. Polymorphism d. Override (2) When you create a class by making it inherit from another class, you are provided with data fields and ____ automatically. a. fonts c. class names b. methods d. arrays (3) By convention, a class diagram contains the ____ following each attribute or...
Java Questions A class must implement at least one interface. Question 1 options: True False Question...
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...
Question 1 Inheritance represents what type of relationship? Is-A Has-A Was-A Composition Flag this Question Question...
Question 1 Inheritance represents what type of relationship? Is-A Has-A Was-A Composition Flag this Question Question 2 What is the keyword used to indicate a class inheritance relationship? Flag this Question Question 3 A sub class may not access any private members of the super class by name. True False Flag this Question Question 4 What is the keyword used by a sub class to call a super class constructor? Flag this Question Question 5 When we implement the method:...
PRG/421 Week One Analyze Assignment – Analyzing a Java™Program Containing Abstract and Derived Classes 1. What is...
PRG/421 Week One Analyze Assignment – Analyzing a Java™Program Containing Abstract and Derived Classes 1. What is the output of the program as it is written? (Program begins on p. 2) 2. Why would a programmer choose to define a method in an abstract class (such as the Animal constructor method or the getName()method in the code example) vs. defining a method as abstract (such as the makeSound()method in the example)? /********************************************************************** * Program: PRG/421 Week 1 Analyze Assignment * Purpose: Analyze the coding for...
True or False: Python programs require two or more modules. 1. 2. The keyword while means the same thing as While in Python. 3. In Python, _MyVar15 is a valid variable name. 4. To make your progr...
True or False: Python programs require two or more modules. 1. 2. The keyword while means the same thing as While in Python. 3. In Python, _MyVar15 is a valid variable name. 4. To make your program more secure, use obscure variable names such as xz14dEE 5. Indenting code that should be executed when an if statement evaluates as true makes your program easier to read, but the indentation is not necessary. 6. A dictionary object contains zero or more...
1. When a sub class object is created, when is the call to the super class...
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. ...
Please create two tests classes for the code down below that use all of the methods...
Please create two tests classes for the code down below that use all of the methods in the Transaction class, and all of the non-inherited methods in the derived class. Overridden methods must be tested again for the derived classes. The first test class should be a traditional test class named "Test1" while the second test class should be a JUnit test class named "Test2". All I need is to test the classes, thanks! Use a package that contains the...
I 'discovered' interfaces and I started to love them. The beauty of an interface is that...
I 'discovered' interfaces and I started to love them. The beauty of an interface is that it is a contract, and any object that fulfills that contract can be used wherever that interface is required. The problem with an interface is that it can't have a default implementation, which is a pain for mundane properties and defeats DRY. This is also good, because it keeps the implementation and the the system decoupled. Inheritance, on the hand, maintains a tighter coupling,...
Question 1 If a method is marked as protected internal, who can access it? Classes that...
Question 1 If a method is marked as protected internal, who can access it? Classes that are both in the same assembly and derived from the declaring class. Only methods that are in the same class as the method in question. Internal methods can only be called using reflection. Classes within the same assembly, and classes derived from the declaring class Question 2 To avoid having to use fully qualified referenced classes, you could: Add a reference to the class....
True or False: Python programs require two or more modules. 1. 2. The keyword while means the same thing as While in Python. 3. In Python, _MyVar15 is a valid variable name. 4. To make your program more secure, use obscure variable names such as xz14dEE 5. Indenting code that should be executed when an if statement evaluates as true makes your program easier to read, but the indentation is not necessary. 6. A dictionary object contains zero or more...
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