Coforge Interview Questions, Process, and Tips

Q1. What are best practices of UI and Process model.
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Q1. Tell me yourself
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Q1. Which java version are you using in your project and what are the features in it
Ans. 
We are using Java 11 in our project, which includes features like local variable type inference, HTTP client API, and improved security.
• Java 11 introduced local variable type inference, allowing the compiler to infer the type of a variable based on the initializer.

• The HTTP client API in Java 11 provides a more modern and flexible way to send HTTP requests and handle responses.

• Java 11 also includes improved security fea...read more
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Q2. Which spring boot version are you using in your project and what are the features in it
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We are using Spring Boot version 2.5.2 in our project, which includes features like improved startup performance, enhanced actuator endpoints, and updated dependencies.
• Spring Boot 2.5.2 offers improved startup performance compared to previous versions.

• Enhanced actuator endpoints provide better monitoring and management capabilities.

• Updated dependencies ensure compatibility with the latest libraries and frameworks.
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Q3. What is 12 factors approach for micro service
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The 12 factors approach is a methodology for building modern, scalable, and maintainable microservices.
• Codebase: One codebase tracked in revision control, many deploys

• Dependencies: Explicitly declare and isolate dependencies

• Config: Store config in the environment

• Backing services: Treat backing services as attached resources

• Build, release, run: Strictly separate build and run stages

• Processes: Execute the app as one or m...read more
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Q4. How to find the 3rd highest element in an unsorted array with duplicate using java 8.
Ans. 
Use Java 8 streams to find the 3rd highest element in an unsorted array with duplicates.
• Convert the array to a stream using Arrays.stream()

• Use distinct() to remove duplicates

• Sort the stream in descending order using sorted(Comparator.reverseOrder())

• Skip the first two elements using skip(2)

• Find and return the third element using findFirst()
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Q1. What are higher order functions in javascript
Ans. 
Higher order functions in JavaScript are functions that can take other functions as arguments or return functions as output.
• Higher order functions can be used to create more flexible and reusable code.

• Examples include functions like map, filter, and reduce in JavaScript.

• They allow for functions to be passed as parameters, making code more concise and readable.
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Q2. Make a component for utilizing data from an API
Ans. 
Create a component to fetch and display data from an API
• Use a library like Axios or Fetch to make API requests

• Parse the JSON data received from the API

• Display the data in a user-friendly format on the front end
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Reverse the words in the string

Q1. Aws cloud core services
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Q2. Ansible terraform docker jenkins
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Q1. Difference between list and set
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List is an ordered collection of elements with duplicates allowed, while set is an unordered collection of unique elements.
• List maintains the order of elements, while set does not guarantee any specific order.

• List allows duplicate elements, while set does not allow duplicates.

• List is implemented using ArrayList, LinkedList, etc., while set is implemented using HashSet, TreeSet, etc.
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Q2. Write java program to reverse the words in given sentence.
Ans. 
Java program to reverse words in a given sentence.
• Split the sentence into words using split() method

• Reverse the array of words

• Join the reversed words back into a sentence
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Q3. Find duplicate words from given sentence
Ans. 
Identify duplicate words in a given sentence
• Split the sentence into individual words

• Create a hashmap to store word frequencies

• Iterate through the words and check if they already exist in the hashmap

• If a word is already in the hashmap, it is a duplicate
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Q4. Explain oops concept.
Ans. 
OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPs focuses on creating objects that interact with each other to solve a problem.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• For example, a class 'Car' can have objects like 'BMW', 'Toyota', etc. with properties and methods specific to each object.
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Q5. Method overloading and method overriding.
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