tabbu25794@gmail.com 1. What is Spring Security? Answer: Spring Security is a powerful and customizable framework for authentication, authorization, and access control in Java applications. It integrates seamlessly with the Spring Framework to secure web applications, REST APIs, and method-level access. 2. What are the key features of Spring Security? Answer: 3. How does Spring Security handle … Read more
PART 1: Spring Boot – Core + Project Based Questions 1. What is Spring Boot and why did you use it? Answer:Spring Boot is an extension of the Spring Framework that simplifies application development by providing: In my project:I used Spring Boot to build a REST-based microservice where quick setup, minimal configuration, and easy deployment … Read more
1. What are the main features introduced in Java 8? Answer: 2. Write a Java 8 program to filter even numbers from a list. Answer: java Output: Code 3. What is the difference between map() and flatMap() in Streams? Answer: java Output: Code 4. Explain Optional in Java 8 with an example. Answer: Optional is … Read more
1. What is the difference between List, Set, and Map? Answer: 2. How does HashMap work internally? Answer: 3. Difference between HashMap and Hashtable Answer: 4. Fail-Fast vs Fail-Safe Iterators Answer: 5. Difference between ArrayList and LinkedList Answer: 6. Comparable vs Comparator Answer: Example: java 7. Difference between HashSet and TreeSet Answer: 8. ConcurrentHashMap vs … Read more
1. What is Java? Java is a high-level, object-oriented programming language. It is platform independent because Java programs run on JVM. 2. Why is Java platform independent? Java code is compiled into bytecode, which can run on any operating system using JVM. 3. What is JVM? JVM (Java Virtual Machine) executes Java bytecode and converts … Read more