Fidelity Investments Senior Software Development Test Engineer Interview Questions and Answers

Q1. Difference between @requestbody and @responsebody
Ans. 
Difference between @requestbody and @responsebody annotations in Spring MVC
• The @RequestBody annotation is used to bind the HTTP request body to a method parameter in Spring MVC controller

• The @ResponseBody annotation is used to bind the return value of a method to the HTTP response body in Spring MVC

• Example: @RequestBody User user - binds the request body to a User object parameter

• Example: @ResponseBody String hello() -...read more
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Q2. Some scenario based questions on Excepetion handling
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DP graphs strings it was good

Q1. Reverse a linkded list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, previous, and next

• Iterate through the list, updating pointers to reverse the direction

• Return the new head of the reversed list
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Q2. Print fibonacci series
Ans. 
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with two variables initialized to 0 and 1

• Loop through desired number of iterations, adding the previous two numbers to get the next number

• Print or store each number in the series
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Q1. Questions related to Java, AWS, Microservices
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Q2. Program to find 2 biggest number in array
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Program to find 2 biggest numbers in array of strings
• Iterate through the array and convert each element to integer

• Keep track of the two biggest numbers found so far

• Return the two biggest numbers at the end
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Q1. Java related questions
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Q2. Design patterns
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Quants, DSA, Logical, Analytical, OS, DBMS

Q1. Please introduce yourself
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Q2. Why UBS and what excited you
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Basic program with stream

Q1. Microservice architecture
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Q2. Crud operations
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It had 3 questions, the level was medium hardish

Q1. There were 3 rounds of interviews, 2 technical and 1 HR, ln First round I was asked about OOPs, 2 medium level DSA questions, asked to write code on paper and explain the approach. Questions: 1. Given an ...read more
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General apti questions

Work-life balance and career progression

Q1. Full Java deep knowledge including oops concepts then rest APIs then have some basic knowledge of microservices then spring boot all the things have mastery
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Q1. What is fast wrto performance?hashmap or treemap and why
Ans. 
HashMap is faster than TreeMap wrto performance due to its constant time complexity for most operations.
• HashMap has O(1) time complexity for most operations while TreeMap has O(log n) time complexity.

• HashMap is implemented using an array of buckets while TreeMap is implemented using a Red-Black Tree.

• HashMap is preferred for frequent read operations while TreeMap is preferred for frequent write operations.

• HashMap is uno...read more
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Q2. Can I write a try catch block inside a catch Block
Ans. 
Yes, it is possible to write a try catch block inside a catch block.
• This is called nested try-catch block.

• It is useful when we want to handle different types of exceptions in different ways.

• Example: try { //code } catch (ExceptionType1 e1) { try { //code } catch (ExceptionType2 e2) { //code } } }

• It is important to avoid excessive nesting as it can make the code difficult to read and maintain.
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Q3. Are exceptions can be written in a catch block seperated by commas,?
Ans. 
Yes, multiple exceptions can be caught in a single catch block separated by commas.
• Multiple exceptions can be caught in a single catch block separated by commas.

• This can be useful when handling different types of exceptions in a similar way.

• For example: catch (IOException | SQLException ex) { // handle exception }
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Q4. Hashmap internal working
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Q1. Why this and what all offers you are having It was a normal telephone call
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