Attach additional responsibilities to an object dynamically.It provides a flexible alternative to subclassing for extending functionality.

Related MCQs

• It is also known as Wrapper, it is used when subclassing is not possible or practical to add functionality and it is used to add functionality at runtime. This pattern is
• ____________ object which receives request from UI layer object and then controls/coordinates with other object.
• In which of the following pattern a class represents functionality of another class?
• Which design pattern provides a single class which provides simplified methods required by client and delegates call to those methods?
• Which design pattern provides a single class which provides simplified methods required by client and delagates call to those methods?
• Select the view which is shown by object Object diagram.
• In which of the following pattern, a null object replaces check of NULL object instance?
• The Proxy pattern deals with situations where you have a complex object or it takes a long time to create the object.
• A ___________ is an object that stores a snapshot of the internal state of another object.
• What is the difference between an active object and a passive object?