Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Textbook Question
Chapter 11.9, Problem 11.9.3CP
Suppose Fruit, Apple, Orange, GoldenDelicious, and McIntosh are defined in the following inheritance hierarchy:
Assume the following code is given:
Fruit fruit = new GoldenDelicious();
Orange orange = new Orange();
Answer the following questions:
a. Is fruit instanceof Fruit?
b. Is fruit instanceof Orange?
c. Is fruit instanceof Apple?
d. Is fruit instanceof GoldenDelicious?
e. Is fruit instanceof McIntosh?
f. Is orange instanceof Orange?
g. Is orange instanceof Fruit?
h. Is orange instanceof Apple?
i. Suppose the method makeAppleCider is defined in the Apple class. Can Fruit invoke this method? Can orange invoke this method?
j. Suppose the method makeOrangeJuice is defined in the Orange class. Can orange invoke this method? Can Fruit invoke this method?
k. Is the statement Orange p = new Apple() legal?
l. Is the statement McIntosh p = new Apple() legal?
m. Is the statement Apple p = new McIntosh() legal?
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Students have asked these similar questions
Q1.
Suppose that Fruit, Apple, Orange, GoldenDelicious, and McIntosh are defined in
the following inheritance hierarchy:
Fruit
Аpple
Orange
makeAppleCider() void
+ makeOrangeJuice() void
GoldenDelicious
McIntosh
And assume that the following code is given:
Fruit fruit = new GoldenDelicious();
Orange orange = new Orange(O;
Answer the following questions, and explain your answer.
Is fruit instanceof Fruit?
Is fruit instanceof Orange?
Is fruit instanceof Apple?
Is fruit instanceof GoldenDelicious?
Is fruit instanceof McIntosh?
Is orange instanceof Orange?
Is orange instanceof Fruit?
h. Is orange instanceof Apple?
Can fruit invoke makeAppleCider method?
j.
a.
b.
С.
d.
e.
f.
g.
i.
Can orange invoke makeAppleCider method?
k.
Can fruit invoke makeOrangeJuice method?
Can orange invoke makeOrangeJuice method?
m. Is the statement Orange p new Apple() legal?
Is the statement McIntosh p = new Apple () legal?
Is the statement Apple p new McIntosh () legal?
I.
n.
O.
1. An inheritance principle is used to explore and extend the Course class. The UML of the Course is presented
below:
Course
- courseName : String
- sectionNumber : int
- instructorName : String
- numberOfStudentsEnrolled : int
#Course()
#Course(courseName : String)
#Course(courseName : String, sectionNumber: int,
instructorName : String)
+getCapacity() : int
+getCourseName() : String
+setCourseName(courseName : String) : void
+getSectionNumber() : int
+setSectionNumber(sectionNumber : int) : void
+getlnstructorName() : String
+setlnstructorName(instructorName : String) : void
+getNumberOfStudentsEnrolled() : int
+toString(): String
Part 1.1. Implement the abstract class Course strictly according to its UML one-to-one (do not include
anything extra, do not miss any data fields or methods).
Add comments to your program and mark where data fields, constructors, getters, setters and toString() are
located, and which method is abstract or static (if any).
Note: No methods should have any…
The organization working on deforestation wants you to create software using your object-oriented concepts for trees. Trees has category of pine and eucalyptus. You must store information of all of these trees. Identify classes, their attributes and inheritance (if any) and implement following functionality:
Input function
Update info of pine tree
Update info of eucalyptus
Display function
Chapter 11 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 11.2 - True or false? A subclass is subset of a...Ch. 11.2 - What keyword do you use to define a subclass?Ch. 11.2 - What is single inheritance? What is multiple...Ch. 11.3 - What is the output of running the class C in (a)?...Ch. 11.3 - How does a subclass invoke its superclasss...Ch. 11.3 - True or false? When invoking a constructor from a...Ch. 11.4 - True or false? You can override a private method...Ch. 11.4 - True or false? You can override a static method...Ch. 11.4 - How do you explicitly invoke a superclasss...Ch. 11.4 - How do you invoke an overridden superclass method...
Ch. 11.5 - Identify the problems in the following code:...Ch. 11.5 - Prob. 11.5.2CPCh. 11.5 - If a method in a subclass has the same signature...Ch. 11.5 - If a method in a subclass has the same signature...Ch. 11.5 - If a method in a subclass has the same name as a...Ch. 11.5 - Prob. 11.5.6CPCh. 11.7 - Prob. 11.7.1CPCh. 11.8 - Prob. 11.8.1CPCh. 11.8 - Prob. 11.8.2CPCh. 11.8 - Can you assign new int[50], new Integer [50], new...Ch. 11.8 - Prob. 11.8.4CPCh. 11.8 - Show the output of the following code:Ch. 11.8 - Show the output of following program: 1public...Ch. 11.8 - Show the output of following program: public class...Ch. 11.9 - Indicate true or false for the following...Ch. 11.9 - For the GeometricObject and Circle classes in...Ch. 11.9 - Suppose Fruit, Apple, Orange, GoldenDelicious, and...Ch. 11.9 - What is wrong in the following code? 1public class...Ch. 11.10 - Prob. 11.10.1CPCh. 11.11 - Prob. 11.11.1CPCh. 11.11 - Prob. 11.11.2CPCh. 11.11 - Prob. 11.11.3CPCh. 11.11 - Prob. 11.11.4CPCh. 11.11 - Prob. 11.11.5CPCh. 11.12 - Correct errors in the following statements: int[]...Ch. 11.12 - Correct errors in the following statements: int[]...Ch. 11.13 - Prob. 11.13.1CPCh. 11.14 - What modifier should you use on a class so a class...Ch. 11.14 - Prob. 11.14.2CPCh. 11.14 - In the following code, the classes A and B are in...Ch. 11.14 - In the following code, the classes A and B are in...Ch. 11.15 - Prob. 11.15.1CPCh. 11.15 - Indicate true or false for the following...Ch. 11 - Sections 11.211.4 11.1(The Triangle class) Design...Ch. 11 - (Subclasses of Account) In Programming Exercise...Ch. 11 - (Maximum element in ArrayList) Write the following...Ch. 11 - Prob. 11.5PECh. 11 - (Use ArrayList) Write a program that creates an...Ch. 11 - (Shuffle ArrayList) Write the following method...Ch. 11 - (New Account class) An Account class was specified...Ch. 11 - (Largest rows and columns) Write a program that...Ch. 11 - Prob. 11.10PECh. 11 - (Sort ArrayList) Write the following method that...Ch. 11 - (Sum ArrayList) Write the following method that...Ch. 11 - (Remove duplicates) Write a method that removes...Ch. 11 - (Combine two lists) Write a method that returns...Ch. 11 - (Area of a convex polygon) A polygon is convex if...Ch. 11 - Prob. 11.16PECh. 11 - (Algebra: perfect square) Write a program that...Ch. 11 - (ArrayList of Character) Write a method that...Ch. 11 - (Bin packing using first fit) The bin packing...
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