Java Inheritance

Polymorphism

Inheritance

Abstraction

Encapsulation

superclass

subsetclass

subclass

relativeclass

super

this

void

extends

Changing the value of a method's parameters in the subclass.

Providing a specific implementation of a method that is already provided by its superclass.

Removing a method from the superclass in the subclass.

Calling a method from the superclass in the subclass.

super.methodName();

this.methodName();

superclass.methodName();

methodName();

The argument list must exactly match that of the overridden method.

The return type must be the same or a subtype of the return type declared in the original overridden method.

A method declared final cannot be overridden.

The overriding method must always be static if the overridden method is static.

The program will compile without any errors.

The program will throw a runtime exception.

The compiler will generate an error.

The method will be ignored during execution.

parent

super

this

base

private

protected

public

default

class Dog + class Animal {}

class Dog inherits class Animal {}

class Dog extends Animal {}

class Dog extends class Animal {}