Executor Service Future Interface Stream API programs
Senior Java Developer Tech Lead Interview Questions
5,584 senior java developer tech lead interview questions shared by candidates
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Questions were around microservices, exception handling , core java , design patterns and system design
streams, lambda, functional interface, concurrency in java
Core java concept and live problems solution
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?
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