U.S. Bank Fullstack Java Developer Interview Questions and Answers

Q1. Tell me about yourself?
Ans. •I'm Akashdeep Prasad. • I'm in my early twenties. • I'm born and brought up in Mumbai, Andheri but currently I'm reside in Thane. - Now, coming to my highest qualification :- • I have completed my graduation in Bachelor of Science in Information Technology from University of Mumbai. - I like to share my certification with you :- • I'm certified Java Full Stack Developer. - Sir, I like to share my hobbies with you :...read more
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Q2. Why should I hire you ?
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Q3. What is your salary expectation?
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Q1. I forgot question
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Q1. I can't remember what questions asked
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Q1. About company and your skills
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Q2. Java full stack developet
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Q1. A senior in my current team was asking questions. He was helping to complete my answers. Be prepared with oops, collection, thread concepts, spring, hibernate basics thoroughly.
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Q1. Remove duplicate value in arraylist
Ans. 
Use a HashSet to remove duplicates from an ArrayList of strings.
• Create a HashSet and add all elements from the ArrayList to it.

• Clear the ArrayList and then add all elements back from the HashSet.
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Q1. Tell me about internal working of JVM
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Q2. Tell me about SAGA pattern in Microservices
Ans. 
SAGA pattern is a design pattern used in microservices architecture to manage distributed transactions.
• SAGA pattern breaks down a long-running transaction into a series of smaller, independent transactions.

• Each step in the SAGA pattern is a separate service that communicates with other services through events.

• If a step fails, compensating transactions are executed to rollback the changes made by previous steps.

• Example:...read more
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Q1. Tell me about your current project structure
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Q2. What is an API , how would you secure an API
Ans. 
API stands for Application Programming Interface. It defines the methods and data formats that applications can use to communicate with each other.
• API is a set of rules and protocols that allows different software applications to communicate with each other.

• To secure an API, you can use authentication methods like OAuth, API keys, or JWT tokens.

• Implementing encryption (HTTPS) and rate limiting can also enhance API secu...read more
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Q1. Why do you want to relocate to Bangalore
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Q2. Tell me about one instance where you faced pressure and how did you overcome ?
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Q1. Tell you about me self
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Q2. Coding test for me
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Q3. Servlet question
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Q4. Jdbc question and mysql database
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Q5. What is cookie ? why use to create web application
Ans. 
A cookie is a small piece of data stored on the user's computer by the web browser, used to track user activity and personalize user experience.
• Cookies are used to store user preferences, login information, and shopping cart items.

• They help websites remember users and their preferences, making the browsing experience more personalized.

• Cookies can also be used for tracking user behavior, such as analyzing website traffi...read more
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Core java, servlet ,jdbc

Q1. How is memory managed in go programming language?
Ans. 
Memory in Go is managed using garbage collection, which automatically frees up memory that is no longer in use.
• Go uses a garbage collector to automatically manage memory allocation and deallocation.

• Memory is allocated on the heap, and garbage collection is used to free up memory that is no longer needed.

• Pointers are used to reference memory locations, allowing for efficient memory management.

• Examples: var x *int = new(
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Q1. Explain project internal architecture?
Ans. 
Project internal architecture refers to the structure and organization of the codebase and components within a software project.
• Components and modules are organized in a logical manner to ensure scalability and maintainability.

• Design patterns such as MVC, MVVM, or microservices may be used to structure the codebase.

• Communication between components is defined through interfaces and APIs.

• Data flow and dependencies are ma...read more
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Q1. How would you manage conflicts in team?
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Q1. Hash map implementation
Ans. 
Hash map is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hash map uses hashing to map keys to indices in an array.

• It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 123); int value = map.get("key");
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