Java Entwickler Interview Questions

30,830 java entwickler interview questions shared by candidates

finally face to face. this is 6 hour long and they will decide very quick the result. First is a Java test. expect to write long java programs with pen and paper. should write code accurately no psudo code java code. some of the questions were insert node in tree, find the bug in single linked list which is looping. Heavy multi threading concurrency questions. thread contention, java 5+ concurrency API lots of multi threading in depth questions. somof the questions ae when java does context switching explain what happens in CPU level1,level2,level3 cache. how do you optmize hit miss on cpu cache with java threading. questions about DB partition sharding, network topology in cassandra, clearly Big 0 questions. java concurrency concurrency collections framework questions I was asked to write on white board function in java to recursively delete files and then in a directory tree. Java code with semi colons command and perfect syntax was expected. boundary conditions need to be handled. unit tests were asked to be written.
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Lead Java Developer

Interviewed at Intercontinental Exchange

3.2
Jan 23, 2016

finally face to face. this is 6 hour long and they will decide very quick the result. First is a Java test. expect to write long java programs with pen and paper. should write code accurately no psudo code java code. some of the questions were insert node in tree, find the bug in single linked list which is looping. Heavy multi threading concurrency questions. thread contention, java 5+ concurrency API lots of multi threading in depth questions. somof the questions ae when java does context switching explain what happens in CPU level1,level2,level3 cache. how do you optmize hit miss on cpu cache with java threading. questions about DB partition sharding, network topology in cassandra, clearly Big 0 questions. java concurrency concurrency collections framework questions I was asked to write on white board function in java to recursively delete files and then in a directory tree. Java code with semi colons command and perfect syntax was expected. boundary conditions need to be handled. unit tests were asked to be written.

interviewer started with oops principle Object comparison diff. bte string and stringbuffer http request lifecycle 2 puzzles - did not strike me at time -2 same candles - 1 burns in 1 hr.how will you measure 1 1/2 hr -how will you tell weather a number can be represented in 2 raise to n like 4 can be writeen as 2square.
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Java Lead

Interviewed at Ness Digital Engineering

4
Jul 25, 2011

interviewer started with oops principle Object comparison diff. bte string and stringbuffer http request lifecycle 2 puzzles - did not strike me at time -2 same candles - 1 burns in 1 hr.how will you measure 1 1/2 hr -how will you tell weather a number can be represented in 2 raise to n like 4 can be writeen as 2square.

1st Programming Round 1) WAP to check if the string is unique or not 2) Given an array of Integers , among the elements find the pair whose sum is equal to a given number 3) Idr tbh Have to solve 2 out of 3 (Logic is very important , other errors are acceptable)
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Java Developer

Interviewed at Thinkitive Technologies

4.5
Aug 27, 2019

1st Programming Round 1) WAP to check if the string is unique or not 2) Given an array of Integers , among the elements find the pair whose sum is equal to a given number 3) Idr tbh Have to solve 2 out of 3 (Logic is very important , other errors are acceptable)

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