Adobe Software Engineer I interview questions

Phone interview with the manager: Q: What are the different classes in the collection frameworks in Java? Q: What is concurrent hashmap and how does it work? Q: What happens when you type an URL in a browser Onsite interview: Round1: Was with the manager. Design a spell checker. Behavioral about how will you act in a situation when you are given a very short deadline for a project. Round 2: Level order traversal of a BT. Difference between Queue,add() and Queue,offer() Round 3: SQL queries. Resume based questions. Coding question involving hashmap and queues. Round 4: Object oriented design for a Connect 4 board game.