tell me about yourself? what do you know about Zalando? why do you want to work for us? why do you want to relocate? why did you leave your previous job?
Senior Java Engineer Interview Questions
606 senior java engineer interview questions shared by candidates
1st Technical Round: 1. Method overriding rules? 2. Output? • //classes will compile fine bcos both r throwing run time exceptions • class TestOverride { • void solution() throws NullPointerException { • System.out.println("super"); • } • } • • class TestSubOverride extends TestOverride { • void solution() throws RuntimeException { • System.out.println("sub"); • } • } 2. Given array {4,5,6,1,2,4}; how do u search particular element ex:1? Ans: he was looking for best search algorithm – ans is binary search algorithm 3. Consider I have huge data which is stored randomly, which data structure is best for retrieval with performance of O(1)? Ans: Hashmap bcos of performance O(1) always 4. Write a code to delete a node from LinkedList 5. Write a simple code for Threading. 6. What is difference between callable and Runnable? 7. What is functional interface? 8. Why functional interface should have only one abstract method why not more than one? 9. When we use lamda expressions? 10. What is difference between IOC and dependency injection? 11. Why do we need dependency injection? 12. Scopes of bean in spring? 2nd Technical Round: 1. Why Java is so popular? In depth answer 2. Given Name, write code to print all combinations using that. 3. Given array, {1,2,3,4,5,6,7,8} and {4,1,2,5,1,2,3,4,5,6,7,8}, at any given position how do you find out array is sorted or not. (Circular sorting)
Basic OOPS, Spring Framework, Sql, 2 basic coding questions etc.
Do you mind staying at the company to support the last deployment?
How to work with a List> in java stream API. answer: flatMap Is String Mutable: No
Had I done any mentoring before? This question came up 2 or 3 times with different people.
how weblogic works
spring ioc containers, dependency injection, spring mvc architecture, annotations, hibernate, jpa, spring security, database queries, deployment process, micro services, java concepts like streams, functional interface, collections, strings, java mail. Aws services like EC2, Ses. Docker deployments. Maven build system.
What are you doing in the current company?
how to find nth largest number in array
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