Deloitte Junior Java Developer Interview Questions and Answers

Q1. They basically asked questions related to your project.
Add your answer
Q2. Then asked design patters and related questions to it.
Add your answer
Q3. Asked SOLID principal of software development.
Add your answer
Q4. Gave some coding questions related to Java array where I had to return the index of values whos total is 10.
Add your answer
Q5. How you would connect springboot project with data base.
Ans. 
Use Spring Data JPA to connect Spring Boot project with database.
• Add database configuration in application.properties or application.yml file

• Create entity classes annotated with @Entity and @Table

• Create repository interfaces extending JpaRepository

• Use @Autowired annotation to inject repository in services or controllers
Answered by AI
Add your answer

Q1. 1. Diff between static keyword and final keyword 2. Different ways of creating thread and which approach is better 3. Pgm to find min word and max word in a sentence
Ans. 
The questions are related to Java programming and do not involve the medical field or puzzles.
• The static keyword is used to declare a variable or method that belongs to the class itself, rather than an instance of the class.

• The final keyword is used to declare a constant value or to prevent a variable, method, or class from being modified or extended.

• Different ways of creating threads in Java include extending the Thre...read more
Answered by AI
Add your answer

Q1. 1, What are the purposes of api gateway other then authentication 2. how circut breaker works 3. What is saga design pattern 4. What is primary and secondary caching
Ans. 
API gateway serves as a central entry point for all client requests, providing various functionalities beyond authentication.
• API gateway acts as a reverse proxy, routing requests to appropriate microservices.

• It can handle request/response transformation, protocol translation, and payload encryption/decryption.

• API gateway can implement rate limiting, throttling, and caching to improve performance.

• It enables service disc...read more
Answered by AI
Add your answer

Q1. Sort list of employee using stream concept and comparator based on employee number.
Ans. 
Sort list of employees by employee number using streams and comparator.
• Use Stream API to convert list to stream

• Use Comparator to compare employee numbers

• Use sorted() method to sort the stream based on comparator
Answered by AI
Add your answer
Q2. Thread life cycle
Add your answer

Aptitude test with Java MCQ questions

Basic programs in Java

Q1. Salary discussion
Add your answer

Q1. DSA Collection Spring boot Java 8
Add your answer

Q1. Oops, Multithreading,DSA,Design Pattern
Add your answer

There were 2 questions and I was supposed to write the code inside the function but the input to the function is not given correctly. Instead of giving a list to sort, I was given a single value for a function to sort.

Q1. Previous projects related questions.
Add your answer
Q2. Sound knowledge on mentioned tech stack.
Add your answer
Q3. Pattern based questions specific for java
Add your answer
Q4. SQL CRUDs and stored procedures based questions.
Add your answer
Q5. Java 8 and Springboot questions.
Add your answer

Codes on preferred skill from CV