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|Interview Questions and Answers|
|Ans. Public constructor is simple and easy as it's the default way of object creation. So there are no additional coding overheads as compiler provides the default constructor if none is provided by coder.|
With static final methods, it facilitates loose coupling by segregating the responsibility of object creation to a separate method. Validation can be done on the constructor arguments before calling it. Moreover if any adaption on the arguments is required that can achieved easily with factory method.On the flip side, there is coding overhead and additional method call.
Sample Code for constructor
Sample Code for factory
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|Difference between Factory and Abstract Factory Design Pattern ?|
| Please specify in what sequence the objects of following classes will be created ?|
Session , SessionFactory, Query , Configuration
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|What is ThreadFactory ?|
|How many SessionFactory and Session objects are created ?|
|Which class provides the enumerated value for Bean Scope ?|
|What are the advantages and disadvantages of Factory Design Pattern ?|
|What is a factory design pattern ?|
|Difference between Singleton and Factory Design Pattern ?|