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Design - Interview Questions and Answers for 'Adapter' - 6 question(s) found - Order By Newest

 Q1. What are the Wrapper classes available for primitive types ?Core Java
Anonymous
Ans. boolean - java.lang.Boolean
byte - java.lang.Byte
char - java.lang.Character
double - java.lang.Double
float - java.lang.Float
int - java.lang.Integer
long - java.lang.Long
short - java.lang.Short
void - java.lang.Void

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   Like      Discuss      Correct / Improve     java   java5   data types   wrapper classes   adapter design pattern        rare

 Q2. What Design pattern Wrapper Classes implement ?Design
Anonymous
Ans. Adapter.

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 Q3. Difference between Proxy and Adapter ?Design
Anonymous
Ans. Adapter object has a different input than the real subject whereas Proxy object has the same input as the real subject. Proxy object is such that it should be placed as it is in place of the real subject.

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 Q4. Difference between Adapter and Facade ?Design
Anonymous
Ans. The Difference between these patterns in only the intent. Adapter is used because the objects in current form cannot communicate where as in Facade , though the objects can communicate , A Facade object is placed between the client and subject to simplify the interface.

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 Q5. What are the disadvantages of Adapter Design Pattern ?Design2017-05-07 08:43:19

Ans. It introduces a layer of adaptations before it reaches the final and desired interface.

Moreover sometimes all requests are forwarded to adapter class. Some of such requests doesn't even require any sort of adaptions as they are qualified to call the final interface directly and introducing overheads.

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   Like      Discuss      Correct / Improve     Adapter Design Pattern  design pattern

 Q6. What could be the real world example of Adapter Design Pattern ?Design2017-05-07 08:45:07

Ans. Voltage converters / Power Adapters

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   Like      Discuss      Correct / Improve     Adapter Design Pattern  Design Pattern


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