Java Trainee Interview Questions

30,843 java trainee interview questions shared by candidates

First Round - Working of Hashmap, ArrayList Linked List, Java Basic questions Second Round - Coding Exercise - implement SecurityDataServices - Objective 1 1) SecurityServiceImpl - methods a)addSecurity(Security s) b)recordTick(long secID, Tick t), c)getPrice(Security s) d) getHistoricalPrice(Security S, TimeStamp asOfNow) 2)SecurityImpl - methods 1) getSecId() 2)getListTicks() 3)getCurrentPrice() 4)recordTick() 3) Tick Impl - methods 1) getPrice(), 2) getTimeStamp() Implement all these classes in 1.5 hr, Use multithreading, I used ConcurrentHashMap and CopyonwriteArraylist use atomic operations like putifAbsent() CodeReview questions - explain the flow of written code, explain java locks, write it using lambda expression, rewrite the code using locks 3rd round - behavioural questions - why do you want to join Sapient? extra activities apart from work? any technology that you follow?
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Senior Java Developer

Interviewed at Publicis Sapient

3.4
Feb 1, 2018

First Round - Working of Hashmap, ArrayList Linked List, Java Basic questions Second Round - Coding Exercise - implement SecurityDataServices - Objective 1 1) SecurityServiceImpl - methods a)addSecurity(Security s) b)recordTick(long secID, Tick t), c)getPrice(Security s) d) getHistoricalPrice(Security S, TimeStamp asOfNow) 2)SecurityImpl - methods 1) getSecId() 2)getListTicks() 3)getCurrentPrice() 4)recordTick() 3) Tick Impl - methods 1) getPrice(), 2) getTimeStamp() Implement all these classes in 1.5 hr, Use multithreading, I used ConcurrentHashMap and CopyonwriteArraylist use atomic operations like putifAbsent() CodeReview questions - explain the flow of written code, explain java locks, write it using lambda expression, rewrite the code using locks 3rd round - behavioural questions - why do you want to join Sapient? extra activities apart from work? any technology that you follow?

Given a system, a number N, represent item #, and several numbers that represent the factor that it will process the item # if the item can be a multiple of it. Found that how many items cannot be processed? Ex: Given [2, 5] and N = 10. 2, 4, 6, 8, 10, 5 can be process the remaining number is 1 3 7 9, so return 4.
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Java Engineer

Interviewed at Drawbridge

4
Aug 6, 2015

Given a system, a number N, represent item #, and several numbers that represent the factor that it will process the item # if the item can be a multiple of it. Found that how many items cannot be processed? Ex: Given [2, 5] and N = 10. 2, 4, 6, 8, 10, 5 can be process the remaining number is 1 3 7 9, so return 4.

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