Inheritance in Object-Oriented Programming

Interface implementation

Class abstraction

Code encapsulation

Subtype polymorphism

A semicolon indicating end-of-the statement unless used in creational expressions like array initialization.

A cast operator matching either an interface or abstract class implemented/extended by the instantiated class.

A reference type that matches or is a supertype of the instantiated class' type.

An integer specifying how many objects should be created.

Bird myPet = null

Animal myPet = new Fish()

Mammal myPet = new Bird()

Fish myPet = new Animal()

The activate() from FlyingObject is inherited due to lexical order.

This situation results in a compilation error due to ambiguity between parent class methods.

The activate() from Watercraft takes precedence as it's considered more specialized.

Both methods are inherited but neither can be used unless disambiguated by Seaplane.

Polymorphism testing with superclass references.

Recursion analysis for base and derived classes.

Algorithmic time complexity comparison.

Loop unrolling within inheritance structures.

QuickSort with recursion

In-place QuickSort with iteration

Iterative Merge Sort

Heap Sort without recursion

C c = new C();

C b = new B();

A c = new C();

B c = new C();

“J j = new J();” and “J k = new K();”

“J j = new J();”, “J k = new K();”, and “J l = new L();”

“J j = new J();” and “J l = new L();”

“J k = new K();”, and “J l = new L();”

ElectricCar[] garage = new ElectricCar[10];

Vehicle[] garage = new Vehicle[10];

Object[] garage = new Object[10];

Car[] garage = new Car[10];

public void toString()

private String toString()

public String toString()

public String toString(int num)