Hexaware Technologies
Openmynz Interview Questions and Answers
Q1. How do you increase array size?
To increase array size, you can create a new array with a larger size and copy the elements from the original array to the new array.
Create a new array with a larger size
Copy elements from the original array to the new array
Update the reference to the new array
Q2. What are the pillers of oops concept
The pillars of OOPs concept are Inheritance, Encapsulation, Polymorphism, and Abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation details and showing only the necessary features.
Q3. Difference between overloading and overriding
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 a compile-time polymorphism while overriding is a runtime polymorphism.
Overloading is used to provide different ways of calling the same method while overriding is used to provide a specific implementation of a method in a subclass.
Overloading is achieved within the same c...read more
Q4. Can we rollback after commit?
No, we cannot rollback after commit in a database.
Once a transaction is committed, changes are permanent and cannot be undone.
Rollback can only be done before committing a transaction.
Committing a transaction makes the changes final and persistent in the database.
Rollback is used to undo changes made in a transaction before committing.
Q5. Why did you choose Hexaware
I chose Hexaware because of their strong reputation in the IT industry and their focus on innovation and career development.
Hexaware has a strong reputation in the IT industry
They are known for their innovative solutions and cutting-edge technologies
Hexaware offers excellent career development opportunities
Their company culture and values align with my own
I was impressed by the positive feedback from current and former employees
Hexaware has a global presence and works with to...read more
Q6. Explain oops concepts in detail
OOPs concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation details and showing only the necessary features.
Q7. Explain OOPS concepts
OOPS concepts are the foundation of object-oriented programming, focusing on principles like inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation details and showing only the necessary...read more
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