Coviam Java Developer interview questions

1. The first one is of online test with questions like reversing linked list, merging two linked list and a string question along with MCQ. Completed that in 40 minutes. Got shortlisted. 2. First round of interview starts with HTML,CSS and Javascript. a) What's new in HTML5? b) CSS Box model and properties c) Javascript basics d) Then linkedlist question, sum of two numbers represented by linked lists e) reverse a phrase without using tokenizers Answered all of them, interviewer expected that I would take time for coding questions, but I completed them in less than 5 mins. 3) Second round is of approx 2 hours. The interviewer asked me so many questions on DS, Algorithms, SQL, Threading etc... Answered all of them. He is super impressed with me. 4) Third round is with manager, he gave me a question like this. I tried my level best, then asked some theory questions, what is Heap Memory and Program Memory, How is java class loader works. Implement a queue a) Enqueue happens at 100 messages/sec with one thread. b) Dequeue happens at 10 messages/sec with 5 threads. c) At any time the number of unprocessed messages pushed to backlog. When the number of messages in backlog increases 1000, stop incoming messages until number of messages in backlog decreases to 500.