Revature Associate Trainee Interview Questions and Answers

Q1. Questions related to Java, Spring, Rest API
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Q1. Basic java collection questions
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Q1. Spring boot basic questions
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Q1. Why should we hire you
Ans. 
I have a strong technical background, proven track record of delivering high-quality software, and a passion for continuous learning and improvement.
• I have a Bachelor's degree in Computer Science and X years of experience in software development.

• I have successfully led multiple projects from conception to completion, delivering high-quality software on time and within budget.

• I am proficient in a variety of programming ...read more
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30 mins Aptitude Question

30 mins - 3 Coding Question

Q1. Describe Rest API
Ans. 
Rest API is a set of rules and conventions for building and interacting with web services using HTTP methods.
• Rest API stands for Representational State Transfer Application Programming Interface.

• It uses standard HTTP methods like GET, POST, PUT, DELETE to perform CRUD operations.

• RESTful APIs use URLs to access resources, and return data in JSON or XML format.

• Stateless communication allows for scalability and flexibilit...read more
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Q2. What is various Response code. Diffenrence b/w 200 & 201, 400 & 403
Ans. 
Response codes indicate the status of a HTTP request. 200 & 201 are success codes, while 400 & 403 are client error codes.
• 200 - OK: Request was successful

• 201 - Created: Request was successful and a new resource was created

• 400 - Bad Request: The server cannot process the request due to a client error

• 403 - Forbidden: The server understood the request, but refuses to authorize it
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Quant, logical reasoning, mathematics

Q1. Access modifiers
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Q2. Diff between abstract class and interface Difference between array and array list Difference between method overloading and overriding Pillars of oops Deadlock Normalisation
Ans. 
Abstract class is a class with abstract methods, interface is a contract with only abstract methods. Array is fixed size, ArrayList is dynamic. Method overloading is same method with different parameters, overriding is redefining a method. OOP pillars are inheritance, encapsulation, polymorphism, abstraction. Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other...read more
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Easy applitute question with 1 coding question at the end

Q1. String builder vs string buffer
Ans. 
String builder is faster but not thread-safe, while string buffer is slower but thread-safe.
• String builder is recommended for single-threaded applications for better performance.

• String buffer is recommended for multi-threaded applications to ensure thread safety.

• Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();
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Q2. Final keyword in oops
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The final keyword in OOP is used to restrict the user from changing the value of a variable, overriding a method, or inheriting from a class.
• Final variable: value cannot be changed once assigned

• Final method: cannot be overridden in child classes

• Final class: cannot be inherited by other classes
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Q3. Bsf graph explanation
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BSF graph explanation
• BFS (Breadth-First Search) is a graph traversal algorithm that explores all the neighbor nodes at the present depth before moving on to the nodes at the next depth.

• It uses a queue data structure to keep track of the nodes to visit next.

• BFS is often used to find the shortest path in an unweighted graph.

• Example: BFS can be used to find the shortest path in a maze from the starting point to the exit.
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If you are a fresher , then this is for you else almost no coding test for experienced candidates.

Q1. Javascript basics, Angular react general questions depends upon profile.
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Q1. They asked general questions related to some hectic situation faced in previous company / project..
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Q1. Self introduction
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Q2. Project description
Ans. 
Developed a web application for tracking personal fitness goals and progress.
• Used React.js for front-end development

• Implemented RESTful APIs for data retrieval and storage

• Utilized MongoDB for database management
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Q1. Questions on project
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Q2. Any problems faced
Ans. 
Yes, faced challenges with debugging complex code and integrating third-party APIs.
• Debugging complex code with multiple dependencies

• Integrating third-party APIs with inconsistent documentation

• Resolving compatibility issues between different software components
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