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.
Lead Java Developer Interview Questions
239 lead java developer interview questions shared by candidates
Design the Vending machine using Microservices.
You are given a matrix having 0s & 1s where each row & column is sorted also. So need to find the maximum matrix of 1s. e.g. Below is the given matrix, note each row & column is sorted. {0,0,0,0,1} {0,0,0,1,1} {0,1,1,1,1} {0,1,1,1,1} {1,1,1,1,1} so max matrix having 1s can be- 1,1,1,1 1,1,1,1 1,1,1,1
It's mainly in Java 8 features
I mentioned in resume about Spring-XD. Asked what is it.
Bracket balance checking.
first round hireview is basics java, concurrency, collections, basic OO, basic sql questions. this is a recorded session so all candidates will get same questions.
1. Microservice work architechre 2. SOLID pricipal 3. Collection tricky question 4. Right way to third party tool integartion
Second question was like to find the substring which can be used multiple times to build the original string. Question was bit different but this was the main concept to solve.
Data Structure related questions, situational questions
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