Mphasis Interview Questions and Answers for Freshers

Q1. How to handle the exceptions globally in rest api Springboot
Ans. 
Handle exceptions globally in Springboot REST API
• Use @ControllerAdvice annotation to define global exception handling for all controllers

• Create a class annotated with @ControllerAdvice and define methods to handle specific exceptions

• Use @ExceptionHandler annotation to specify which exceptions the method should handle

• Return appropriate HTTP status codes and error messages in the exception handling methods
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Q2. Micro services design pattern and example
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Microservices design pattern involves breaking down a large application into smaller, independent services.
• Each microservice is responsible for a specific function or feature

• Communication between microservices is typically done through APIs

• Microservices can be deployed independently, allowing for easier scalability and maintenance

• Examples include Netflix (uses microservices for different functionalities like recommenda...read more
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Q3. Add 10% hike for the employees who are more than 5 years of experience using stream API.
Ans. 
Use Java Stream API to apply a 10% salary hike for employees with over 5 years of experience.
• Use a List<Employee> to store employee data.

• Filter employees with experience > 5 years using stream().filter().

• Map the filtered employees to update their salary by multiplying with 1.1.

• Collect the results back into a List using collect(Collectors.toList()).

• Example: employees.stream().filter(e -> e.getExperience() &g...read more
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Q4. Map, flatmap method difference in stream
Ans. 
Map method transforms each element in a stream, while flatMap method transforms each element into a stream and then flattens the result.
• Map method applies a function to each element in the stream and returns a new stream with the transformed elements.

• FlatMap method applies a function that returns a stream for each element in the original stream, then flattens these streams into a single stream.

• Example: Using map to con...read more
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Q5. How to handle customized exceptions in controller advice with example code.
Ans. 
Handling customized exceptions in controller advice with example code
• Create a custom exception class that extends RuntimeException

• Create a controller advice class to handle exceptions globally

• Use @ExceptionHandler annotation in the controller advice class to handle specific exceptions

• Return a custom error response with appropriate status code and message
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Q6. What annotations are included in @SpringbootApplication annotation
Ans. 
The @SpringBootApplication annotation includes @Configuration, @EnableAutoConfiguration, and @ComponentScan annotations.
• Includes @Configuration annotation to specify that the class can be used by the Spring IoC container as a source of bean definitions.

• Includes @EnableAutoConfiguration annotation to enable Spring Boot's auto-configuration feature.

• Includes @ComponentScan annotation to specify the base packages to scan f...read more
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HackerRank test with questions including logical thinking and English

Q1. Basics like method overloading & Overridding, sting concepts, file handling & basics of HTML, CSS
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Q2. Linear and binary search algorithm
Ans. 
Linear search checks each element in a list sequentially, while binary search divides the list in half at each step.
• Linear search has a time complexity of O(n), while binary search has a time complexity of O(log n).

• Linear search is used for unsorted lists, while binary search is used for sorted lists.

• Example: Linear search - searching for a name in a phone book. Binary search - searching for a word in a dictionary.
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Q3. SQL queris, joins, truncat
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Q1. Manager interaction on client handling related queries
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Q2. Managerial Questions on handling priority tasks and handling team
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Q1. Where do you want to see yourself in 5 years?
Ans. 
In five years, I envision myself as a skilled software engineer, leading projects and mentoring junior developers.
• I aim to deepen my expertise in software development, particularly in areas like cloud computing and machine learning.

• I hope to take on leadership roles, guiding teams through complex projects and fostering a collaborative environment.

• I aspire to contribute to open-source projects, enhancing my skills while...read more
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Q2. What are your strengths and limitations?
Ans. 
I excel in problem-solving and teamwork, but I sometimes struggle with time management under tight deadlines.
• Strength: Strong problem-solving skills. For example, I successfully debugged a complex issue in a project, improving performance by 30%.

• Strength: Excellent teamwork. I collaborated with cross-functional teams on a project, leading to a successful product launch.

• Limitation: Time management. I occasionally undere...read more
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Q1. ES6 features, let var const, closures
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Q2. React coding question counter
Ans. 
Create a simple counter component in React that increments and decrements a value.
• Use useState to manage the counter state: const [count, setCount] = useState(0);

• Create buttons for incrementing and decrementing the count: <button onClick={() => setCount(count + 1)}>Increment</button>

• Display the current count: <p>Current Count: {count}</p>

• Ensure to handle edge cases, like preventing negative c...read more
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Q1. Introduce yourself in brief
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Q2. What is your qualification
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Q1. Sql questions on rdbms
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Q2. Java questions on ooops
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