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|Interview Questions and Answers|
|Ans. We have multi tier architecture with multiple layers , We have series of web servers and applications in application tier, infrastructure libraries at middle tier and Database servers at the lower tier. We are using Oracle as Database, ESB ( Enterprise service Bus ) for asynchronous communication and Rest Web Services.|
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|Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?|
|Difference between first level and second level cache in hibernate ?|
|What are the benefits of using Spring Framework ?|
|What things should be kept in mind while creating your own exceptions in Java?|
|What are various types of Class loaders used by JVM ?|
|Difference between C++ and Java ?|
|Difference between SAX and DOM Parser ?|
|How to implement an immutable class ?|
|Difference between Factory and Abstract Factory Design Pattern ?|
|What things you would care about to improve the performance of Application if its identified that its DB communication that needs to be improved ?|