Atri Technocrat Java Developer Interview Questions and Answers

PEN PAPER round consisting of three coding and c/c++ output based questions.

Q1. OOPS concepts , javascript
Add your answer
Q2. Projects related questions
Add your answer

Q1. Behavioural questions
Add your answer
Q2. Resume , internship related questions
Add your answer

Duration 1 hr general aptitude topics

Duration 1hr subject related coding questions

Q1. Oops Concept in c#
Ans. 
Oops concept in C# refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation hides the internal state of an object and only exposes necessary information.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Abstraction focuses on...read more
Answered by AI
Add your answer
Q2. Manage and unmanaged code
Add your answer
Q3. Dependency injection
Add your answer
Q4. Filter and its type
Ans. 
A filter is a tool used to select specific data from a larger set based on certain criteria.
• Filters can be used in various programming languages and databases to narrow down results.

• Types of filters include text filters, numeric filters, date filters, and custom filters.

• Examples of filters include WHERE clause in SQL, filter() function in Python, and filter() method in JavaScript.
Answered by AI
Add your answer
Q5. View in sql server
Ans. 
A view in SQL Server is a virtual table that contains the result set of a SELECT statement.
• Views are used to simplify complex queries by storing them as a virtual table.

• Views can be used to restrict access to specific columns or rows of a table.

• Views can be created using the CREATE VIEW statement.

• Example: CREATE VIEW vwEmployee AS SELECT FirstName, LastName FROM Employees;
Answered by AI
Add your answer
Q6. Primary key vs unique key
Ans. 
Primary key uniquely identifies a record in a table, while unique key ensures uniqueness but allows null values.
• Primary key enforces uniqueness and not null constraint on a column

• Primary key can consist of multiple columns

• Unique key enforces uniqueness but allows null values

• Unique key can be applied to multiple columns as well
Answered by AI
Add your answer
Q7. Procedure vs function
Ans. 
Procedures are a set of instructions that perform a specific task, while functions return a value after performing a task.
• Procedures do not return a value, while functions do.

• Functions can be called within expressions, while procedures cannot.

• Functions are more versatile and reusable compared to procedures.
Answered by AI
Add your answer
Q8. Trigger in sql server
Ans. 
A trigger in SQL Server is a special type of stored procedure that automatically executes when certain events occur in a database.
• Triggers can be used to enforce business rules, audit changes, or replicate data.

• There are two main types of triggers in SQL Server: DML triggers and DDL triggers.

• DML triggers fire in response to data manipulation language (DML) events like INSERT, UPDATE, and DELETE.

• DDL triggers fire in res...read more
Answered by AI
Add your answer
Q9. Interface in c#
Ans. 
Interface in C# is a reference type that defines a contract for classes to implement certain methods and properties.
• Interfaces cannot have implementation, only method signatures and properties.

• Classes can implement multiple interfaces in C#.

• Interfaces are used to achieve abstraction and multiple inheritance in C#.

• Example: public interface IShape { void Draw(); }

• Example: public class Circle : IShape { public void Draw()
Answered by AI
Add your answer
Q10. Abstract class vs interface
Ans. 
Abstract class is a class that can have both abstract and non-abstract methods, while interface is a contract that defines methods that must be implemented by a class.
• Abstract class can have constructor, fields, and methods, while interface cannot have any implementation.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used when some common functionality needs ...read more
Answered by AI
Add your answer
Q11. Partial view in.det
Ans. 
Partial view in ASP.NET MVC allows reusing common UI elements across multiple views.
• Partial views are like reusable components that can be included in multiple views

• They help in reducing code duplication and improving maintainability

• Partial views are rendered using Html.Partial or Html.RenderPartial methods
Answered by AI
Add your answer
Q12. Method overloading vs overriding
Ans. 
Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is redefining a method in a subclass with the same name and parameters as in the superclass.
• Method overloading involves multiple methods with the same name but different parameters.

• Method overriding involves redefining a method in a subclass with the same name and parameters as in the superclas...read more
Answered by AI
Add your answer
Q13. Union vs union all
Ans. 
Union combines and removes duplicates, while union all combines all rows including duplicates.
• Union removes duplicates, while union all includes duplicates.

• Union is slower as it has to remove duplicates, while union all is faster.

• Use union when you want to remove duplicates, use union all when duplicates are acceptable.
Answered by AI
Add your answer
Q14. Foreign key In sql
Ans. 
Foreign key in SQL is a field in a table that links to a primary key in another table, enforcing referential integrity.
• Foreign key constraints ensure data consistency between related tables

• Foreign key values must exist in the referenced table's primary key column

• Foreign key can be used to establish relationships between tables
Answered by AI
Add your answer
Q15. Constructor in c#
Ans. 
Constructor in C# is a special type of method that is automatically called when an instance of a class is created.
• Constructors have the same name as the class and do not have a return type.

• They can be used to initialize the data members of the class.

• Constructors can be overloaded to have multiple versions with different parameters.

• Example: public class Person { public Person(string name) { this.Name = name; } }
Answered by AI
Add your answer

Q1. Tell me about your project
Add your answer
Q2. Salary discussion
Add your answer

Q1. Describe oops concept.
Ans. 
OOPs concept stands for Object-Oriented Programming, which is a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain both data and methods to manipulate that data.

• It emphasizes concepts like inheritance, encapsulation, polymorphism, and abstraction.

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

• Encapsulation restricts access to certain comp...read more
Answered by AI
Add your answer

Only one written test consists of aptitude questions and one coding question. coding question is easy-moderate

Q1. There are 2 technical rounds .In first round they have covered Java theory concepts and oops basic questions and asked me to write any sorting code and a SQL query that is print who's salary lies between 1...read more
Add your answer

Q1. About yourself, Where you are after 5 years,Are you ready to relocate,about company and some basic hr questions.
Add your answer

Q1. Show project what we did till?
Ans. 
Developed a project management tool for tracking tasks and deadlines.
• Implemented user authentication and authorization features

• Integrated with third-party APIs for calendar syncing

• Utilized Agile methodology for iterative development
Answered by AI
Add your answer