Decorator

java.lang.Object

Structural.Decorator.Decorator

All Implemented Interfaces:: Component

Direct Known Subclasses:: ConcreteDecoratorA, ConcreteDecoratorB

public abstract class Decorator extends Object implements Component

The Decorator class wraps a Component and adds functionality dynamically.

Field Summary

Fields

Modifier and Type

Field

Description

protected Component

component

The wrapped Component.
Constructor Summary

Constructors

Constructor

Description

Decorator(Component component)

Constructor accepting a Component to wrap.
Method Summary

Modifier and Type

Method

Description

double

cost()

Gets the cost of the component.

String

getDescription()

Gets the description of the component.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- component
  
  protected Component component
  
  The wrapped Component.
Constructor Details
- Decorator
  
  public Decorator(Component component)
  
  Constructor accepting a Component to wrap.
  
  Parameters:
  
  component - The Component to wrap.
Method Details
- getDescription
  
  public String getDescription()
  
  Description copied from interface: Component
  
  Gets the description of the component.
  
  Specified by:
  
  getDescription in interface Component
  
  Returns:
  
  A string description.
- cost
  
  public double cost()
  
  Description copied from interface: Component
  
  Gets the cost of the component.
  
  Specified by:
  
  cost in interface Component
  
  Returns:
  
  The cost as a double.