Basic java questions and how to detect loop in a linked list .
Java Senior Interview Questions
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It was medium with questions based on java 8, springboot, microservices, rest api and mysql Features of java 8 and asked to solve some coding ques using streams Questions on core java, multiple threading, collections
Spring Boot, Spring Cloud, Kafka, Design Pattern, 2 DSA question easy one.
Ways of creating thread. When to use runnable and when to use Thread. Abstract Class Instantiation of Abstract class Singleton classes Where singleton design can break? Custom class object as key in hashmap Identity hashmaps---equality is done using reference (==) Concurrent hashmaps--contains segments--1Sements = 1 Hasmap(Conceptually) Final class
1. TCP vs other protocols 2. Garbage Collection algorithms 3. Dependency Injection vs Inversion of Control 4. Java 8 vs Java 21/25 5. Heap and CPU cache 6. volatile keyword
JWT, Authentication,Spring security,Spring annotation and Java 8 program max slaary of employees group by department. Shallow copy and deep copy , transactional
Do you know about Kafka and how to use it in a springboot project?
Java System design Spring CI/CD
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