Module io.github.astrapisixtynine.design.patterns.observer

Package io.github.astrapi69.design.pattern.observer

Class AbstractObserver<T>

java.lang.Object

io.github.astrapi69.design.pattern.observer.AbstractObserver<T>

Type Parameters:

T - the generic type of the observable object

All Implemented Interfaces:

ActionCommand, Observer<T>

public abstract class AbstractObserver<T>
extends Object
implements Observer<T>, ActionCommand

A generic implementation of the Observer pattern This abstract class implements the Observer and ActionCommand interfaces, providing a basic framework for observers in the Observer design pattern

Field Summary

Fields

Modifier and Type	Field	Description
protected Subject<T,Observer<T>>	subject	The subject being observed

Constructor Summary

Constructors

Constructor	Description
AbstractObserver(Subject<T,Observer<T>> subject)	Constructor for a new observer object

Method Summary

Modifier and Type	Method	Description
T	getObservable()	Gets the current observable object
void	update(T observable)	This method is called to notify the observer of changes in the observable object Implementing classes should define the specific behavior that occurs when the observable object changes

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.github.astrapi69.design.pattern.observer.api.ActionCommand

execute

Field Details

subject

protected Subject<T,Observer<T>> subject

The subject being observed

Constructor Details

AbstractObserver

public AbstractObserver(Subject<T,Observer<T>> subject)

Constructor for a new observer object

Parameters:

subject - the subject to observe

Method Details

getObservable

public T getObservable()

Gets the current observable object

Returns:

the observable object

update

public void update(T observable)

This method is called to notify the observer of changes in the observable object Implementing classes should define the specific behavior that occurs when the observable object changes

Specified by:

update in interface Observer<T>

Parameters:

observable - the observable object that has changed