TickerPlant Software Developer Interview Questions and Answers for Experienced

Coding snippets and object oriented concepts

Q1. What is oops concepts what is difference between get and post
Ans. 
OOPs concepts refer to Object-Oriented Programming concepts like inheritance, encapsulation, polymorphism, and abstraction. GET and POST are HTTP methods used for sending data to a server.
• OOPs concepts include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation involves bundling data and methods that operate on the data...read more
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Q2. What is inheritance and polymorphism
Ans. 
Inheritance is a mechanism in OOP where a class inherits properties and behaviors from another class. Polymorphism allows objects of different classes to be treated as objects of a common superclass.
• Inheritance allows a class to inherit attributes and methods from another class, promoting code reusability.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass, enabling flexibil...read more
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Q3. What is annotations ,
Ans. 
Annotations are metadata added to code to provide additional information or instructions.
• Annotations are used in Java to provide metadata about classes, methods, variables, etc.

• They can be used for documentation purposes, code analysis, or to generate code.

• Examples include @Override, @Deprecated, and @SuppressWarnings annotations.
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Q4. What is rest Controller
Ans. 
A rest controller is a component in a web application that handles incoming HTTP requests and returns appropriate responses.
• Handles HTTP requests and maps them to appropriate handler methods

• Typically used in RESTful web services to implement CRUD operations

• Can be implemented using frameworks like Spring MVC in Java
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Q5. What is hash map?
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A hash map is a data structure that stores key-value pairs and allows for efficient retrieval of values based on their keys.
• Hash maps use a hash function to map keys to indexes in an array, where the corresponding values are stored.

• They offer constant-time average case complexity for inserting, deleting, and searching for elements.

• Examples of hash map implementations include HashMap in Java and unordered_map in C++.
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