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Polymorphism enables objects of different classes to be treated as instances of a common superclass, allowing methods to be overridden to provide specific behaviors. In Java, this is demonstrated through inheritance and method overriding. For example, consider a base class Vehicle with a method displayInfo(): public void displayInfo() { Sys ...

Understanding Method Overriding in Java Method overriding in Java allows a subclass to provide a specific implementation of a method that is already defined in its superclass. However, the behavior differs between static and instance methods. Let's explore this with examples. public class Main { public static void main(String[] args) { ...

GradeCalc Class Using Composition Header File (GradeCalc.hpp) #pragma once #include <vector> #include <array> #include <string> class GradeCalc { public: explicit GradeCalc(const std::string& courseName); void addGrades(int count); void displayGrades() const; void sortGrades(bool ascending = false); in ...

A common expectation is that a pointer to a derived class object should access derived class members. How ever, a base pointer pointing to a derived object may access derived member varaibles but not member funcsions, leading to inconsistent behavior. For example, a Teacher object might incorrectly display as unemployed. Virtual functions resol ...