Flytxt Senior Software Engineer Interview Questions and Answers

Q1. List down Java 8 features and use case
Ans. 
Java 8 introduced several new features including lambda expressions, streams, and functional interfaces.
• Lambda expressions: Allow for more concise and readable code by enabling functional programming.

• Streams: Provide a way to work with collections of objects in a more functional style.

• Functional interfaces: Interfaces with a single abstract method, used to enable lambda expressions.

• Optional class: Helps to avoid null p...read more
Answered by AI
Add your answer
Q2. List down Spring boot annotation used
Ans. 
Spring boot annotations are used to simplify the development process by providing metadata to the Spring framework.
• 1. @SpringBootApplication - Main annotation to indicate the main class of a Spring Boot application.

• 2. @RestController - Annotation for RESTful web services.

• 3. @Autowired - Dependency injection annotation.

• 4. @GetMapping, @PostMapping, @PutMapping, @DeleteMapping - Annotations for mapping HTTP requests to c...read more
Answered by AI
Add your answer
Q3. Difference between String builder and String Buffer
Ans. 
String Builder is not synchronized and faster, while String Buffer is synchronized and slower.
• String Builder is not thread-safe, while String Buffer is thread-safe.

• String Builder is faster due to lack of synchronization, while String Buffer is slower due to synchronization.

• String Builder is recommended for single-threaded operations, while String Buffer is recommended for multi-threaded operations.
Answered by AI
Add your answer
Q4. What is String pool
Ans. 
String pool is a storage area in memory where strings are stored to optimize memory usage by reusing common strings.
• String pool helps in reducing memory usage by storing only one copy of each unique string.

• Strings created using double quotes are stored in the string pool.

• Strings created using new keyword are not stored in the string pool.
Answered by AI
Add your answer
Q5. Number of memory type have. like heap memory , stack
Ans. 
There are two main types of memory in a computer system: stack memory and heap memory.
• Stack memory is used for static memory allocation and is managed by the compiler. It is typically faster but limited in size.

• Heap memory is used for dynamic memory allocation and is managed by the programmer. It is slower but has a larger size.

• Examples: C programming language uses stack memory for function calls and heap memory for dy
Answered by AI
Add your answer

Fundamentals of Data Structures and Algorithms, including SQL.

Q1. Basics of DSA and Algo and sql
Add your answer
Q2. Basics
Add your answer

Q1. Details on previus project
Add your answer
Q2. B
Add your answer

Q1. Basics of DSA and algo ..sql
Add your answer

Q1. What is the design of the microservices implemented in your current project?
Add your answer
Q2. Can you provide a program that prints the second largest number in both an array and a list, illustrating implementations using streams as well as traditional methods?
Add your answer

Q1. Regarding all basic java , sprint boot questions
Add your answer
Q2. More focused on Spring and microservices
Add your answer

Q1. Advance java questions
Add your answer

Q1. Java oops concept, core java concepts
Add your answer

Q1. Springboot, microservices
Add your answer

Q1. What is the SQL query to find the second highest rank in a dataset?
Ans. 
Use a subquery to find the second highest rank in a dataset.
• Use a subquery to select the maximum rank from the dataset.

• Then use another subquery to select the maximum rank that is less than the maximum rank found in the first subquery.
Answered by AI
Add your answer
Q2. What is a program to determine whether a number is odd or even?
Ans. 
A simple program using modulo operator to determine if a number is odd or even.
• Use the modulo operator (%) to check if the number divided by 2 leaves a remainder

• If the remainder is 0, the number is even. If the remainder is 1, the number is odd

• Example: num % 2 == 0 (even), num % 2 == 1 (odd)
Answered by AI
Add your answer

Q1. Sql join query related questions
Add your answer
Q2. Sql find duplicate
Ans. 
Use SQL query with GROUP BY and HAVING clause to find duplicates in a table.
• Use GROUP BY clause to group rows with same values

• Use HAVING clause to filter out groups with count greater than 1

• Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name HAVING COUNT(*) > 1
Answered by AI
Add your answer

Q1. Package discussion
Add your answer
Q2. Company policies
Add your answer

Q1. More questions on interfaces
Add your answer
Q2. Comparator related questions
Add your answer

Q1. Stream api coding questins
Add your answer
Q2. Database questions
Add your answer