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Q3151. What is your choice while writing queries within Hibernate - criteria or HQL ?

Hibernate

Ans. I prefer using Criteria for Dynamic queries and HQL for static queries.

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Q3152. Can we initialize member variables within static block ?

Ans. Static block is like static method that gets executed upon class loading. The way static method allows accessing member variables ( using object references only ), the same static block can also access and initialize member variables.

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Q3153. Which Software Development methodology is being used in your current Job ?

General

Ans. We are using Agile methodology. I attend daily stand up where the development leads takes the status of assigned stories, achievements, any bottlenecks or challenges. We follow iteration of 2 weeks.

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Q3154. Which UML diagrams you usually use for design ?

Design

Ans. Use Case Diagram, Component Diagram for High level Design and Class Diagram , Sequence Diagram for low level design.

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Q3155. How do you coordinate and communicate with the team developers ?

Process

Ans. We as a team of developers , testers , analyst , lead and architect sit close to each other. Most of the time I would just jump to their seat and talk to them ( if required ). We have daily stand up where we discuss things that needs team attention.

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Q3156. What is your role in current position ?

General

Ans. I am working as a Software System Analyst that specializes in understanding Business Requirements, Analyzing them , Performs Cost / Benefit analysis, Make suggestions to business , translate the business requirements into technical requirements, Discuss their feasibility with the technical team, performs sizing in coordination with developers and prepare high level design document.

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Q3157. What kind of software architecture your organization follow ?

Design

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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Q3158. Do you talk to testers ?

Ans. Yes, usually I would talk to them to make sure that we are on same page in terms on understanding the business requirement.

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Q3159. What you would do if you realize that business requirement is not technically feasible ?

Ans. I would first try to make sure that I am correct in that understanding. Will talk to developers and architects to understand the technical challenges to accomplish it. Once I am done with my ground work, Will schedule a meeting with business stake holders. Will gather required evidences and will present the challenges to Business.

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Q3160. Which web application framework you like and Why ?

Framework

Ans. I like Spring as it comes with inbuilt Dependency Injection framework. It has great online community and support and is proven to work well with ORMs like Hibernate. If we are not working with ORM and DI, Struts 2 is also good.

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Q3161. How would you react if you understand that there have been business loss due to some problem with the software ?

Process

Ans. I will first try to find the problem that resulted in the loss and its magnitude. Will try to find the root cause, how long the bug is in production. In the meantime , will check with business how much loss this has resulted. Once the fix has been identified and urgency for the release has been identified, Will get necessary approvals for an emergency release and will try to deploy the fix in minimal possible time. After the release, Will schedule a meeting with team to do an RCA ( Root Cause Analysis ) and procedures that should be in place to avoid such mistakes.

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Q3162. What technologies have you worked with for build management ?

Ans. Ant and Maven

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Q3163. What is the difference between Maven, Ant and Jenkins ?

Tool

Ans. Maven and Ant are Build Technologies whereas Jenkins is a continuous integration tool.

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Q3164. Have you created any build script yourself ?

Ans. Yes, I have worked on many build scripts in last few years.

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Q3165. Difference between jar , war and ear ?

Java EE

Ans. Jar is Java Archieve i.e compressed Class or Class / Java files.

War comprises of compressed Servlet class files,JSP FIles,supporting files, GIF and HTML files.

Ear comprise of compressed Java and web module files ( was files ).

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Q3166. Which version control system you are using in your current project ?

Tools

Ans. We are using SVN and Git Hub.

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Q3167. What is the use of @GeneratedValue annotation in Hibernate?

Hibernate

Ans. This annotation is added to the auto increment column with the strategy to increment the column value. Usually this is added to the surrogate primary key column and specified with the Database Sequence.

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Q3168. Name few interfaces that extends Collection Interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-interfaces-that.html

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Q3169. Name few classes that extends Number Class ?

Ans. http://www.buggybread.com/2015/02/java-util-classes-that-inherit-number.html

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Q3170. Name few classes that extend Thread class ?

Core Java

Ans. http://www.buggybread.com/2015/02/java-threads-classes-that-inherit.html

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Q3171. Name few classes that extends Collections class ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-inherit.html

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Q3172. Name few Date and Time Classes you have used in your projects ?

Ans. http://www.buggybread.com/2015/02/java-util-date-time-classes-and.html

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Q3173. Name few Calendar related classes and Interfaces ?

Ans. http://www.buggybread.com/2015/02/java-util-calendar-classes-and.html

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Q3174. Name few abstract classes of Java collections framework ?

Ans. http://www.buggybread.com/2015/02/java-collections-abstract-classes.html

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Q3175. Name few classes that implement Cloneable interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_58.html

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Q3176. Name few classes that implement Set interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_78.html

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Q3177. Name few classes that implement iterable interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_45.html

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Q3178. Name few classes that implement Map interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_82.html

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Q3179. Name few classes that implement List interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_35.html

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Q3180. Name few classes that implement Queue interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_1.html

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