Egen Solutions Associate Software Engineer Interview Questions and Answers

Q1. Tell me about yourself.
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Aptitude, technical MCQs and c/c++ questions of medium type

Q1. 1. Given offset, find the indices of multi dimensional array 2. Bitwise operations coding 3. Structure padding 4. Code memory storage
Ans. 
Technical questions related to programming concepts and memory management.
• To find indices of a multi-dimensional array using offset, divide the offset by the size of each element and use the quotient as the index for the first dimension. Repeat this process for each dimension.

• Bitwise operations are used to manipulate individual bits in a binary number. Examples include AND, OR, XOR, and bit shifting.

• Structure padding i...read more
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Q1. 1. Difference between abstract class and interface. 2. Internal Working of HashMap 3. Difference Between ArrayList vs Linked List. 4. WAP to reverse a String 5. dependency Injections 6. IOC Container 7. S...read more
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This interview question covers various topics including abstract class, interface, HashMap, ArrayList, Linked List, String reversal, dependency injection, IOC container, and singleton class.
• Abstract class is a class that cannot be instantiated and can have both abstract and non-abstract methods.

• Interface is a blueprint of a class that can only have abstract methods and cannot be instantiated.

• HashMap is a data structure...read more
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Q2. Difference Between controller and Rest Controller
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Controller is a general term for handling requests, while Rest Controller is specifically for RESTful web services.
• Controller is responsible for handling incoming requests and returning responses.

• Rest Controller is a specialized type of controller that is used for building RESTful web services.

• Rest Controller uses HTTP methods like GET, POST, PUT, DELETE to perform CRUD operations on resources.

• Rest Controller returns d...read more
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Q3. What is Stream API in java 8
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Stream API is a new feature in Java 8 that allows processing of collections in a functional way.
• Stream API provides a set of functional interfaces and methods to perform operations on collections.

• It supports parallel processing of collections, making it faster for large datasets.

• Examples of operations include filtering, mapping, sorting, and reducing.

• Stream API can be used with both primitive and object types.

• It promot...read more
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Q1. Mostly from the project that i have worked on.
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Q2. Optional Class in java

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Optional class in Java is used to represent a value that may or may not be present.

• Optional class was introduced in Java 8.

• It is used to avoid null pointer exceptions.

• It can be used with streams to filter out null values.

• Example: Optional name = Optional.ofNullable(null);

• Example: Optional name = Optional.of("John");

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