Starting Out with Java: From Control Structures through Objects (6th Edition)
6th Edition
ISBN: 9780133957051
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 8, Problem 7SA
Is it advisable or not advisable to write a method that returns a reference to an object that is a private field? What is the exception to this?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
private float c;
private void method2(double y) {
c = y;
}
in another class we created an object of the first class then within in it :
tester.method2 (10.0f);
are there any errors ? how many errors if there are any and with explanation please.
Object Oriented Programming: 213COMP, 214COMP (Feb-2022)
Assignment- I [10 marks]
Academic honesty:
O Only pdf file accepted & student ID, will be your upload file.
O Student who submit copied work will obtain a mark of zero.
O Late work or attach file by email message not allowed.
Q1: Write the signature for a method that has one parameter of type String, and does
not return a value.
Q2: Write the signature for a method that has two parameters, both of type Student,
and returns an int value.
Q3: Write the constructor's headers of the followings?
new Student (202101156, “Ahmed");
new Address(51, "jazan university","CS&IT" );
new Grade(true, 505235600, 4.5);
Q4:
a) Write a class Student that define the following information:
name, stid , age.
b) Explain a mutators (setters) and accessors(getters) methods for each
attributes(fields).
c) Add three constructors:
• with empty constructor.
one parameter constructor (name of student)
two parameters constructor (name and stid)
d) Create two…
INSTRUCTIONS: Write a C++ script/code to do the given problem.
Write a class called profileID, which has data members firstName,lastName, age, birthday and ageCompany (the age when you entered in the company). Remember to use set and get methods to access the data members this time. Also, write another class called bonusAward that has a method getBonus()with arguments yos and etype which are both integer data types. This method calculates the bonus received by an employee using this formula: yos*1000 + etype*1000.
Write two derived classes, ASE and SE, using multiple inheritance usingprofileID and bonusAward as parent classes. Both classes must have amethod named getyos()that returns the yos of an employee using the formula age–ageCompany; and a method named getetype() which returns a constant based on the employee type. For ASE, the constant is 10 while for SE that constant is 20.
Last, write a main program where you instantiate ASE as employee1 and SE as employee2. Get their…
Chapter 8 Solutions
Starting Out with Java: From Control Structures through Objects (6th Edition)
Ch. 8.1 - What is the difference between an instance field...Ch. 8.1 - Prob. 8.2CPCh. 8.1 - Describe the limitation of static methods.Ch. 8.8 - Prob. 8.4CPCh. 8.9 - Look at the following statement, which declares an...Ch. 8.9 - Assume that the following enumerated data type has...Ch. 8.9 - Prob. 8.7CPCh. 8 - This type of method cannot access any non-static...Ch. 8 - Prob. 2MCCh. 8 - If you write this method for a class, Java will...
Ch. 8 - Making an instance of one class a field in another...Ch. 8 - This is the name of a reference variable that is...Ch. 8 - This enum method returns the position of an enum...Ch. 8 - Assuming the following declaration exists: enum...Ch. 8 - You cannot use the fully qualified name of an enum...Ch. 8 - The Java Virtual Machine periodically performs...Ch. 8 - If a class has this method, it is called...Ch. 8 - CRC stands for a. Class, Return value, Composition...Ch. 8 - True or False: A static member method may refer to...Ch. 8 - True or False: All static member variables are...Ch. 8 - Prob. 14TFCh. 8 - Prob. 15TFCh. 8 - Prob. 16TFCh. 8 - True or False: Enumerated data types are actually...Ch. 8 - True or False: enum constants have a toString...Ch. 8 - public class MyClass { private int x; private...Ch. 8 - Assume the following declaration exists : enum...Ch. 8 - Consider the following class declaration: public...Ch. 8 - Consider the following class declaration: public...Ch. 8 - A pet store sells dogs, cats, birds, and hamsters....Ch. 8 - Prob. 1SACh. 8 - Prob. 2SACh. 8 - Prob. 3SACh. 8 - Even if you do not write an equals method for a...Ch. 8 - A has a relationship can exist between classes....Ch. 8 - Prob. 6SACh. 8 - Is it advisable or not advisable to write a method...Ch. 8 - Prob. 8SACh. 8 - Look at the following declaration: enum Color {...Ch. 8 - Assuming the following enum declaration exists:...Ch. 8 - Under what circumstances does an object become a...Ch. 8 - Area Class Write a class that has three overloaded...Ch. 8 - BankAccount Class Copy Constructor Add a copy...Ch. 8 - Carpet Calculator The Westfield Carpet Company has...Ch. 8 - LandTract Class Make a LandTract class that has...Ch. 8 - Month Class Write a class named Month. The class...Ch. 8 - CashRegister Class Write a CashRegister class that...Ch. 8 - Sales Receipt File Modify the program you wrote in...Ch. 8 - Parking Ticket Simulator For this assignment you...Ch. 8 - Geometry Calculator Design a Geometry class with...Ch. 8 - Car Instrument Simulator For this assignment, you...Ch. 8 - First to One Game This game is meant for two or...Ch. 8 - Heads or TaiLs Game This game is meant for two or...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Porter’s competitive forces model: The model is used to provide a general view about the firms, the competitors...
Management Information Systems: Managing The Digital Firm (16th Edition)
This optional Google account security feature sends you a message with a code that you must enter, in addition ...
SURVEY OF OPERATING SYSTEMS
The variable a starts with the value 1. The variable b starts with the value 10. The variable c starts with the...
Starting Out with C++ from Control Structures to Objects (9th Edition)
What is an algorithm?
Starting Out With Visual Basic (8th Edition)
ICA 17-24
The decay of a radioactive isotope can be theoretically modeled with the following equation, where C0...
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
In what way is a class more general than a traditional abstract data type?
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- please solve this important, thanks.arrow_forwardC++ OOP use classes only...arrow_forwardWritten in Python It should have an init method that takes two values and uses them to initialize the data members. It should have a get_age method. Docstrings for modules, functions, classes, and methodsarrow_forward
- The following class maintains an account balance and returns a special error code. public class Account { private double balance; // returns new balance or -1 if error public double deposit(double amount) { if (amount > 0) balance += amount; else return -1; // Code indicating error return balance; } } Rewrite the class so that it throws appropriate exception instead of returning -1 as an error code. Write test code that attempts to depositarrow_forwardQ. Can I have a static method in a class that implements a data type?arrow_forwardSubject: Object Oriented PrgrammingLanguage: Java ProgramTopic: Exception Method withdraw throws an exception if amount is greater than balance. public class Account{ private String accntNumber; private String accntName; private double balance; public Account(){} public Account(String num, String name, double bal){ accntNumber = num; accntName = name; balance = bal; } public double getBalance(){ return balance;}}//your class herearrow_forward
- Please help me with this , I am stuck ! PLEASE WRITE IT IN C++ Thanks 1) bagUnion: The union of two bags is a new bag containing the combined contents of the original two bags. Design and specify a method union for the ArrayBag that returns as a new bag the union of the bag receiving the call to the method and the bag that is the method's parameter. The method signature (which should appear in the .h file and be implemented in the .cpp file is: ArrayBag<T> bagUnion(const ArrayBag<T> &otherBag) const; This method would be called in main() with: ArrayBag<int> bag1u2 = bag1.bagUnion(bag2); Note that the union of two bags might contain duplicate items. For example, if object x occurs five times in one bag and twice in another, the union of these bags contains x seven times. The union does not affect the contents of the original bags. Here is the main file: #include <cstdlib>#include <iostream>#include "ArrayBag.h"using namespace std; template…arrow_forward1. In an array of an object type, what values are saved? a. the objects themselves b. the references of the objects 2. In an array of a primitive type, what values are saved a. the primitive values themselves b. the references of the valuesarrow_forwardDoes a method have access to the original object or a copy of it when it receives an object as a parameter?arrow_forward
- Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).arrow_forwardDynamic Apex: Write test class for this apex code(Not required the output) You are working on the project in which you have to create the apex code in which your task is to define the objects dynamically by using the method argument which is api name in string and a map of string, string as a key value pair. Class Code: public static void modifySobjectData(String str , Map mapofString) { //Retrive the type of Sobject by using the getGlobalDescribe Schema.SobjectType targetType = Schema.getGlobalDescribe().get(str); //Initalize the Object Sobject newobject = targetType.newSobject(); for (String s :mapofString.keySet() { newobject.put(s, mapofString.get(s)); } System.debug('newObject' + newobject); //Perform the DML if(targetType != null) insert newobject; } }arrow_forwardModify the attached code: Create a new class called CalculatorWithMod. This class should be a sub class of the base class Calculator. This class should also have an additional method for calculating the modulo. The modulo method should only be seen at the sub class, and not the base class! Include exception handling for instances when dividing by 0 or calculating the modulo with 0. You would need to use throw, try, and catch. The modulo (or "modulus" or "mod") is the remainder after dividing one number by another.Example: 20 mod 3 equals 2Because 20/3 = 6 with a remainder of 2 Refer also to the attached sample outputs:arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
Call By Value & Call By Reference in C; Author: Neso Academy;https://www.youtube.com/watch?v=HEiPxjVR8CU;License: Standard YouTube License, CC-BY