All the question was from oops,and how you implement opps in your project.The most difficult question was diffence between static class and single pattern,they drill down it.

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Anonymous · Accepted Answer

They are really very awsom!!!

Rahul Pandey · Answer

Static classes won't allow you to extend any further class and override the existing methods where as singleton gives you that flexibility. Additionally, you can not serialize the class. Serialization is one feature that is very much used in financial applications.

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