DeepOrion Technology Private Limited Interview Questions and Answers

Q1. Some core Java questions
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Q1. Simple intro about yourself
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General knowledge and logical mathematics.

Q1. 2 week training with review
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Q2. Based on your review task.
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Q1. What are oops concepts in java, explain real time scenario
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OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects to take on multiple forms and behave differently based on their context.

• Encapsulation hides the implementation details of an object and only exposes necessary information.

• Abstraction allows for the creation of abstract class...read more
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Q2. Uses of interface, inheritance
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Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
• Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.

• Inheritance allows for code reuse and extension of existing classes, reducing code duplication.

• Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
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Q3. SQL query for join of tables
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SQL query for joining tables
• Use JOIN keyword to combine two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the condition for joining the tables

• Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
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Q4. Java concepts used in your project
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Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
• Implemented inheritance to create a base class and derived classes with specific functionalities.

• Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.

• Implemented exception handling to handle errors and prevent program crashes.

• Used interfaces to define a set of methods that a ...read more
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Q5. Overloading vs overriding, practical uses
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Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Overloading is used to provide different ways to call a method with different parameters

• Overriding is used to provide a specific implementation of a method in a subclass

• Overloading is resolved at compile-time while overriding is r...read more
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Q1. What you know about the sales
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Sales is the process of selling products or services to customers in exchange for money.
• Sales involves identifying potential customers and convincing them to purchase a product or service.

• It includes building relationships with customers, understanding their needs, and providing solutions.

• Sales also involves negotiating prices, closing deals, and following up with customers for repeat business.

• Sales can be done through...read more
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Q1. Do you know which language is use for frontend technology
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The language used for frontend technology is typically HTML, CSS, and JavaScript.
• HTML is used for structuring web pages

• CSS is used for styling the web pages

• JavaScript is used for adding interactivity to the web pages
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Q1. Regarding salary discussion
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Q1. Detailed discussion on the projects worked on
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Q1. Technical questions and answers
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Q1. Face to face interview
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Q1. General HR questions
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String , Array ,Collection framework related questions.

Ecommerce site with Login,Review,AddToCart,Order features,Filter features.

Q1. Html,Css,Js. Interviewer don't have knowledge on Java,React js.And if you don't able to answer basic html,css related questions they will disqualify you.
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