You have some questionable legacy code (that doesn't use interfaces) that you want to enhance, but you don't want to risk breaking other code that uses it. Which pattern would you use? Decorator O Null Object Adapter Proxy
You have some questionable legacy code (that doesn't use interfaces) that you want to enhance, but you don't want to risk breaking other code that uses it. Which pattern would you use? Decorator O Null Object Adapter Proxy
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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As per our guidelines, we are supposed to answer only one question. Kindly repost the remaining questions separately.
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Adapter converts the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces.
So option c is wrong
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Proxy provides placeholder for another object to control access to it. It deals with how an object is accessed.
So option d is wrong.
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