Soliton Technologies Java Developer Interview Questions and Answers

Q1. Get your basic coding skills right
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Q2. Snippets for all concepts
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Q1. What is Polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent multiple data types.

• Examples include method overloading and method overriding in object-oriented programming.
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Q1. Reverse a string
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Reverse a given string
• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string
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Q2. Basic programming questions
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Q1. What your exp?
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I have over 5 years of experience in software development, specializing in web applications and cloud technologies.
• Developed a full-stack web application using React and Node.js, improving user engagement by 30%.

• Led a team of 4 developers in creating a microservices architecture for a scalable e-commerce platform.

• Implemented CI/CD pipelines using Jenkins and Docker, reducing deployment time by 50%.

• Worked with Agile met...read more
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Q2. What is you total exp?
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Q1. What is oops concept example with each one
Ans. 
Object-oriented programming concepts include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class). Example: class Car with properties like make, model, and methods like start(), stop().

• Inheritance: creating new classes based on existing classes, inheriting their attributes and methods. Example: class SUV inheriting from cl...read more
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Q2. What is data structures and types with examples of all types
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Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.
• Types of data structures include arrays, linked lists, stacks, queues, trees, graphs, and hash tables.

• Arrays are a collection of elements stored in contiguous memory locations, accessed using an index.

• Linked lists are a series of nodes where each node contains data and a reference to the next node.

• Stack...read more
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Q3. What is class and objects with example and code
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A class is a blueprint for creating objects in object-oriented programming. Objects are instances of classes.
• A class defines the properties and behaviors of objects. For example, a 'Car' class may have properties like 'color' and 'model', and behaviors like 'drive' and 'stop'.

• An object is an instance of a class. For example, 'myCar' can be an object of the 'Car' class with specific values for 'color' and 'model'.

• Code e...read more
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Q4. What is virutal function and staic functions
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Virtual functions are functions in a base class that are overridden in derived classes, while static functions belong to the class itself rather than instances.
• Virtual functions allow for dynamic binding and polymorphism in object-oriented programming.

• Static functions are associated with the class itself and can be called without creating an instance of the class.

• Example: virtual void display() = 0; // pure virtual fun...read more
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Q5. What is project u did in present company
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used AngularJS for front-end development

• Implemented RESTful APIs for communication between front-end and back-end

• Utilized MySQL database for storing project data
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Write a function over loading and friend class with example?

Q1. Tell me about ypor self
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Q2. Why do you join in this company
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Q3. What is java
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Q4. What is oops concepts in java
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Q5. What is polymorphism
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