Q3 Technologies

Date: 6 November 2015
Venue: JMD Megapolis IT Park, Sector-48, Gurgaon
The building has a wonderful architecture!!!

After a terrible wait of 1 hour.

Hybris:

1. Full WCMS story.
2. Difference between CSFT and CSFP?
3. In a box show the entire process of Solr functionality by drawing everything.
4. Which pages use Solr?
5. How does Solr get data from hybris DB? Surely, we don't send the entire data.
6. Where is the entry that, which product type (Style variant, size variant, etc.) needs to be indexed? solr.impex was expected!!!
7. Difference between ant, ant clean, ant all and ant clean all?
8. Which of them compiles the code?
9. What new files or what changes will happen if these are run after generate="true"?
10. What do you mean by "build successful"?
11. Entire presentation layer?
12. When is facade needed? When it is not? Answer: Needed only for storefront.
13. What happens at DAO layer?
14. Full process of making a new form entry, starting from form at front-end to DB.
15. Tell me something about spring security in Hybris.
16. What is singleton?
17. Why is it created?
18. Difference between @Resource and @Autowired?
19. What should be done at service layer? What not?
20. What should be done at facade layer? What not?
21. Why use converter/populator?
22. What is the order of AtomicType,Collection,Map,Items,etc. in items.xml? Can we change the order?

Xebia

Date: 5 November 2015
Telephonic

Java:

1. Difference between List and Set?
2. How does Set ensure unique values?
3. What if I want to add multiple objects with same values to Set (or something like that).
4. Why hashcode() when equals is already there?
5. Difference between HashMap and HashTable?
6. Which of them takes "null" value for key?
7. What if two objects with same values are pushed in HashMap?
8. Why should the HashMap key be immutable?
9. What are immutable object? Example in java.
10. How many objects are created for different cases of String creation?
11. In what scenarios will the different String objects result true for == and equals?
12. What is Java SOLID? Hint: SOLID is an acronym.

Design Pattern:

1. Name a few.
2. What are build patterns?

Spring:

1. What is singleton?
2. What is prototype?
3. What about a singleton bean inside prototype?
4. What about a prototype beans inside singleton?
5. Bean life cycle?
6. Dispatcher servlet?
7. Entity manager at DAO?
8. Spring MVC entries.
9. What if there is a cyclic dependency between beans.
10. What is DI?

Amazon Interview

Amazon

Date: 15 November 2014
Venue : Nehru Place

Questions:

1. Create a balanced Binary Search Tree from a sorted array.
2. A 2-D matrix is filled with only zero and one. Each row is sorted i.e. each row has zero's on the left side and one's on the right side.Find the row with maximum number of one's.
3. Create a NGE array for an array. NGE : Next Greater Element. For each element find the next larger element to the right. If there is no larger element to the right then show -1.
   Eg:
   An array : {5,1,23,4,7,5,88,2} will have a NGE : {23,23,88,7,88,-1,-1}.
   5    1    23  4  7    5    88   2
   23  23  88  7  88  88  -1  -1