private

internal

public

protected

To simplify the constructor parameters for all objects.

To enforce a single way of object initialization.

To limit the number of objects created.

The main purpose of constructor overloading is to provide flexibility in object creation.

The original method in the interface is called.

The method is not called at all.

The overridden method in the subclass is called.

The method in the superclass is called.

Polymorphism refers to the ability of a single class to inherit from multiple parent classes.

Polymorphism is the ability of different classes to be treated as instances of the same class through a common interface, enabling method overriding and dynamic method binding.

Polymorphism is the process of creating multiple classes with identical methods and properties.

Polymorphism is the technique of combining different data types into a single class structure.

Multiple Inheritance

Hierarchical Inheritance

Single Inheritance

Multilevel Inheritance

default (package-private)

public

private

protected

Different instances or states of the object are created.

Only one instance can be created regardless of parameters.

The constructor will always return the same object.

Parameters have no effect on the object's state.

ancestor

super

parent

base

The main benefit of encapsulation is faster execution speed.

Encapsulation allows for unlimited data access and sharing.

The main benefit of encapsulation is data protection and integrity.

Encapsulation enhances code readability and simplicity.

Compile-time polymorphism

Static type polymorphism

Dynamic polymorphism

Run-time polymorphism

The 'super' keyword is used to create new classes.

The 'super' keyword is used to define interfaces.

The 'super' keyword is used to implement multiple inheritance.

The 'super' keyword is used to access superclass methods and constructors.

private

public

internal

protected

The subclass cannot access the superclass method.

The subclass inherits the method from its superclass.

The superclass method is deleted from the subclass.

The subclass must implement the method itself.

Method overloading is for the same method name with different parameters; method overriding is for redefining a superclass method in a subclass.

Method overloading is about changing return types; method overriding is for private methods.

Method overloading requires inheritance; method overriding does not involve parameters.

Method overloading changes the method name; method overriding is for static methods only.

Hybrid inheritance

Multilevel inheritance

Single inheritance

Multiple inheritance

The member is accessible to all subclasses.

The member can be accessed from any package.

The member is accessible only to the public interface.

The member is accessible only within the defining class.

Define multiple methods with the same name but different parameters.

Implement a method with a fixed number of parameters.

Create a single method with multiple return types.

Use different class names for each method.

The 'this' keyword is a way to declare global variables in JavaScript.

The 'this' keyword is used to define static methods in classes.

The 'this' keyword refers to the parent class in inheritance.

The 'this' keyword is significant in constructors as it represents the current instance of the object, allowing access to its properties and methods.

The ability of a class to inherit from a single parent class.

The restriction of a class to only one type of inheritance.

The process of combining multiple classes into one class.

The ability of a class to inherit from multiple parent classes.