1st Technical consist of question like:- 1.) Design pattern- GOF, Singleton, Builder, Factory ect. 2.) A simple java program used for sorting. 3.) Aggregation vs Composition 4.) Core java questions-- String pool, prepared statement, heap, Maps, Hashing. etc. Both Client Round was scenario based and only Multi Threading was asked:- It was tough for me as i had never worked on multi threading. Was of same level.
3rd Question was from Java Collections. Given a List of Object, which can contain Integers and also contain List which internally can again contain List to nth Level. Write a utility method which would return a flat List.
Design patterns you used and scenario?
runtime polymorphism
Explain about your projects and work experience. What are the mistakes you have done in past at work? SOLID design principals
Coding challenge - writing a function
1. Solid principles 2. Singleton pattern, in case if we pass hashmap- map can be altered and it will destroy singleton, how to handle that 3. How to create threads 4. How to execute 10 threads at a time 5. How to create global exception class 6. When to use arraylist and linkedlist 7. Completable in java 8 8. What's changed in hashmap in java 8 9. Deep copying and shallow copying 10. Use of volatile keyword in java 11. Programming a. String ="I love programming" -we need to count the length and arrange it in desc but that should be return as string using stream api b. List in = Arrays.asList(1,3,7,0,6,7,8,0); need to sort this and put only 0 at first and let the remaining stay as it is using stream API
Explain what are the features of Java 8
very basic java question
Asked about current project and coding stuff
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