class A{}; class B{}; int main() { A obl,ob2; B ob3; ob3=ob2; } (a)Why does Overloading occur? Is there any error in this code section? If there is any, explain with reason.
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A: Everything is working correctly in the code . You need to override the toString() which can be done…
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A: Answer:- a subclass of java.lang .object
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A: When an abstract class is subclassed, the subclass usually provides implementations for all of the…
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A: Multiple inheritance allow a subclass to inherit from two or more classes.
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A: Ans.) Option B i.e. Unreachable. Expalanation:- When the inheritance is private, the private…
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A: Given that, When class B is inherited from class A, what is the order in which the constructors of…
Q: What are the differences between abstract classes and concrete classes?
A: Abstract Class: Abstract class in java is declared by using keyword abstract. An object of abstract…
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A: Given: In contrast, an interface simply allows you to declare functionality but not to actually…
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A: PROGRAM PLAN INTRO: Define the class named Arithmetic. Define the member variables. Define the…
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A: the answer is an ALL OF THE OPTIONS as given below : Ancestor class Base class Parent class…
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A: Show the C3 linearization
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A: STATIC CLASS MEMBER - Class member can be defined as a static class member by declaring it with a…
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A: I Have answered this question in step 2.
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A: d)- Only (III) above. i.e. Resolving calls to methods dynamically at run-time is called late…
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A: Given: Implement an application in C++ to maintain student management system using object oriented…
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A: Complete code with output is given below :
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A: Abstract class :- Class that is declared abstract is known as abstract class it can have both…
Q: your class inherits from abstract classes or interfaces?
A: An interface contains a set of methods that haven’t been implemented. A class that references the…
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A: Program Approach: Define the interface named IA with two abstract methods Me() and You(). Define…
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A: Interface is a user-defined data type which consists of abstract methods. It is used when different…
Q: An abstract class can only be instantiated if at least half of its methods are defined
A: The answer for the given statement is as follows:-
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A: public class Person{ //declaring instance variables private String Name; private String…
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A: The correct answer is given below with sample code/output and explanation
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A: A class that is declared using “abstract” keyword is called abstract class. It can have abstract…
Q: An instance of an abstract class is made by using the keyword 'new'. true or false
A: An instance of an abstract class is made by using the keyword 'new' :
Q: An object can be created from an abstract class is it true or false
A: Ans : False that An object can be created from an abstract class.
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A: Actually, java is a object oriented programming language. It is a platform independent.
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A: Explicit casting is a casting a sub type class to a super type class in upward direction to the…
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A: PROGRAM CODE: #include<iostream>#include<string>using namespace std; class…
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A: Introduction: Interface: It is a blueprint/template of the class that has abstract methods and…
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A: Question. Method overriding is combination of inheritance and polymorphism? a) True b) false
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A: Note: This is a multiple-question-based problem. As per company guidelines, only the first question…
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A:
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A: In C++, a class's data members and member methods can be classified as static. A class can have both…
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- Mixed Fraction Arithmetic Java Project: Problem Description: Make a java program that facilitates addition, subtraction, multiplication, and division of mixed numbers (similar with the first activity) but this time all of the inputs /outputs may involve fractions, mixed fractions, or a combination. Points to consider: MixedFraction class must override the operations (add, subtract, multiplyBy, divideBy) inherited from Fraction class to have a different implementation if the MixedFraction object will have a Fraction object as parameter in performing the required operation, On top of that, the inherited operations must also be overloaded to allow a MixedFraction object to accept other parameters such as a whole number or another MixedFraction object. The toString method which is inherited must also be overridden by MixedFraction to have a more appropriate return value. Further formatting must also be considered such that if the result of the operation has a zero value for the whole…public static void main(String [] args) { // Step 2: Construct a Day object representing today // and assign it to a variable called aDay // Step 3: Construct a Day object representing the day for our Exam1 on March 1, 2022, and assign it to a variable called examOne // // // Step 4: Declare three integer variables called year, month and day with initial values of 2022, 4, 12. // // 4 // Step 5: Construct a Day object using the three variables and assign it to a variable called examTwo 6. :7 28 29 // // Step 6: Display the three days on separate lines without any messages 30 31 // 32 33 // Step 7: Display the number of days as a positive integer between the two exams with a message 34 35 // 36 // "Number of days between the two exams: " 37 38 39 // Step 8: Update aDay to the day two days later 40 41 // Step 9: Print the year, month and day of aDay, one value per line without any messages 42 43 // 44 45 } 46 47The main differences between method overloading and method overriding should be clarified.
- Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…Carefully understand the code given bellow. Analyze the code and suggest any corrections needed with reason.There may be syntax and logical errors. Class Student { int age; char cnic; int semester; char name; private: int setall(int a, int c, int s, int sem, char n) const ; { age=a; c=cnic; semester=s; name=n; } void Student(int age, char cnic, int semestser, char name) { age =age; cnic=cnic; semester=semester; name =name; } }//; public: int student : displayall ( ) const ; { cout<<Age<<endl; cout<<Name<<endl; cout<<Semester<<endl; cout<<Cnic<<endl; } int main( ) { student 3obj(3,4,5,2); obj 3:: setall( ); obj3 : displayall(int s, char c, char n, int s ); 3obj . setage( ); student obj2; student::obj2.setall(int c, char a, char p, int c ); return 0; }Language: C++ Explain your answer - True or False? If class A is a friend of class B, then class B is also a friend of class A.
- With appropriate examples, explain the features of static class members.Justify why it is desirable to have accessors to private types rather than making the types public for the following three reasons.5. Is it compulsory for a class, which has been declared as abstract, to have at least one abstract method?
- 1(c). What is the problem with the code below? Write two different ways to fix the problem. (5) interface A { interface B { default void f () { System.out.println("A's f"); } default void f () { System.out.printIn("B's f"); } } } public class C implements A, B {Please use java Part 2. Library Class Implement a class, Library, as described in the class diagram below. Library must implement the Comparable interface. The compareTo() method must compare the branch names and only the branch names. The comparison must be case insensitive. The equals() method must compare the branch names and only the branch names. The comparison must be case insensitive. Be sure to test the equals() and compareTo() methods before proceeding. Library - state: String - branch: String - city: String - zip: String - county: String - int squareFeet: int - int hoursOpen: int - int weeksOpen: int + Library(state: String, branch: String, city: String, zip: String, county: String, squareFeet: int, hoursOpen: int, weeksOpen: int) + getState(): String + getBranch(): String + getCity(): String + getZip(): String + getCounty(): String + getSquareFeet(): int + getHoursOpen(): int + getWeeksOpen(): int + setState(state: String): void + setBranch(branch:…Explain Lambda Expressions using examples and rewrite the following examples using Lambda Expressions. Example: 1 public void al() { System.out println (“Hi"); } public void add(int a, int b) { System.out println (atb); Example:2 }