TCS Senior Java Developer Interview Questions, Process, and Tips

Q1. Core java Basics, Java 8 Stream to remove duplicate from Arraylist
Add your answer
Q2. Spring Boot All Annotations
Ans. 
List of Spring Boot annotations
• SpringBootApplication - main annotation to enable Spring Boot features

• RestController - annotation to create RESTful web services

• Autowired - annotation to inject dependencies

• GetMapping/PostMapping/PutMapping/DeleteMapping - annotations for HTTP methods

• ConfigurationProperties - annotation to bind external properties to a class

• EnableAutoConfiguration - annotation to enable Spring Boot's auto...read more
Answered by AI
Add your answer
Q3. Rest Api Using Spring Boot
Ans. 
Answering the question about Rest Api using Spring Boot
• Spring Boot is a popular framework for building RESTful APIs

• It provides easy configuration and setup for REST endpoints

• Annotations like @RestController and @RequestMapping are used to define endpoints

• Spring Boot also includes features like security, caching, and database integration

• Example: @GetMapping("/users") public List getUsers() { return userService.getAllUse
Answered by AI
Add your answer
Q4. Mysql Join difference
Ans. 
MySQL join types and their differences
• INNER JOIN returns only matching rows from both tables

• LEFT JOIN returns all rows from left table and matching rows from right table

• RIGHT JOIN returns all rows from right table and matching rows from left table

• FULL OUTER JOIN returns all rows from both tables

• CROSS JOIN returns all possible combinations of rows from both tables
Answered by AI
Add your answer

Q1. Explain Detail about Current Project
Add your answer
Q2. Design patterns used in Microservices
Ans. 
Design patterns used in Microservices
• Service Registry Pattern

• API Gateway Pattern

• Circuit Breaker Pattern

• Event Sourcing Pattern

• Saga Pattern
Answered by AI
Add your answer

Q1. Questions on Spring AOP
Add your answer
Q2. How do Microservies talk to eachother
Ans. 
Microservices communicate with each other through APIs and messaging protocols.
• Microservices communicate via RESTful APIs, using HTTP requests and responses.

• Message brokers like Kafka or RabbitMQ are used for asynchronous communication between microservices.

• Service discovery tools like Eureka or Consul help microservices locate and communicate with each other.

• Microservices can also communicate through gRPC, a high-perf
Answered by AI
Add your answer
Q3. Logging framework used in current project
Ans. 
We are using Log4j2 for logging in the current project.
• Log4j2 is a popular logging framework in Java.

• It provides support for logging at different levels like DEBUG, INFO, WARN, ERROR, etc.

• Configuration can be done through XML, JSON, or properties file.

• Example: org.apache.logging.log4j log4j-api 2.14.1
Answered by AI
Add your answer

Time and distance, speed, XYZ, blood relations

Arrays, strings, stack, queue, linklist etc

Q1. Who are you ?
Ans. 
Experienced Senior Java Developer with a passion for creating efficient and scalable solutions.
• Over 8 years of experience in Java development

• Strong knowledge of Spring framework and Hibernate

• Experience in designing and implementing RESTful APIs

• Proficient in database management with MySQL and Oracle

• Skilled in troubleshooting and debugging complex code issues
Answered by AI
Add your answer
Q2. Why are you ?
Add your answer

Easy questions DSA array and string.

Q1. Core java concepts
Add your answer
Q2. Design patterns
Add your answer