How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.
Jdbc vs Jpa
Got some questions on Data Structure & Algorithms.
1. Data structures and algorithms 2. Functions in Java 3. Have you built a Java web application project? 4. Java servlets, JSP 5. Exception handling, errors and garbage collection
1. What is the difference between ArrayList and LinkedList? 2. What is the advantage of the Properties file? 3. How is the safety of a thread achieved? 4. How to implement the producer-consumer problem by using BlockingQueue? 5. What is the lock interface in Concurrency API in Java? 6. In Java 8, what is Method Reference? 7. How to find the third element from the end in a linked list in one pass?
Questions: a. What is Eden and survivor space in a heap? b. How to analyze Java memory issues? c. Java inner classes and functions d. Can you list serialization methods? e. Some coding questions like guessing the output f. Describe a time when you felt stressed or overwhelmed. How did you handle it? g. How do you determine what amount of time is reasonable for a task? h. Code writing for a situation
1. What is hash-collision in Hashtable? How is it handled in Java? 2. Can we make the user thread a daemon thread if the thread is already started? 3. What do you mean by Semantic Monitoring? 4. Explain the working of Microservice Architecture. 5. What issues are generally solved by spring clouds? 6. How does the put() method of HashMap work in Java? 7. How to design a good key for HashMap? 8. Why String, Integer, and other wrapper classes are considered good keys?
a. Describe your projects. b. How do you handle clients facing situations and conflicts? c. Started from Core Java concepts, then moved to multithreading and parallel computing.
2. Which design pattern you would suggest in a sample question? 3. Calculate the output of the code? 4. Which algorithm will be better if 1 million runs complete daily? Calculate the time complexity. 5. How do I read/convert an InputStream into a String in Java?
a. Java concepts on data structures, exceptions and error handling b. Spring Boot framework and J2EE c. Basic questions on Azure DevOps and MS SQL d. Basic questions on Angular, jQuery and Ajax
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