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HEPL - A Cavinkare Group Company Interview Questions and Answers
Q1. What is Multithreading? What is the use of background worker?
Multithreading is the concurrent execution of multiple threads to achieve parallelism and improve performance.
Multithreading allows multiple threads to run concurrently within a single process.
It enables parallel execution of tasks, improving performance and responsiveness.
Background worker is a component that simplifies multithreading by providing a dedicated thread for executing time-consuming tasks in the background.
It allows the main thread to remain responsive and not ge...read more
Q2. How to create a file and append some text in that file.
To create a file and append text, use file handling functions in the programming language.
Open the file in append mode
Write the text to the file
Close the file
Q3. Difference between abstarct and interface.
Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are contracts that define the methods that a class must implement.
Abstract classes can have constructors and instance variables, while interfaces cannot.
A class can implement multiple interfaces, but can only inherit from one abstract class.
Abstract classes are used when there is a need for a common base class for multiple related classes, while interfaces ...read more
Q4. Types of classes that you can use in c#
C# supports various types of classes including abstract, sealed, static, and partial classes.
Abstract classes cannot be instantiated and are used as base classes for other classes.
Sealed classes cannot be inherited and are used to prevent further modification.
Static classes cannot be instantiated and contain only static members.
Partial classes allow a class to be defined in multiple files.
Other types of classes include generic classes, nested classes, and value classes.
Q5. What is static?
Static is a keyword in programming that denotes a variable or method that belongs to the class rather than an instance of the class.
Static variables and methods can be accessed without creating an instance of the class.
Static variables are shared among all instances of the class.
Static methods cannot access non-static variables or methods.
Examples of static methods include Math.max() and Arrays.sort().
Q6. What is namespace?
A namespace is a container that holds a set of identifiers to avoid naming conflicts.
Namespaces are used to organize code and avoid naming collisions.
They can be nested within other namespaces.
They are declared using the 'namespace' keyword.
They can be used to group related classes, functions, and variables.
For example, the 'std' namespace in C++ contains standard library functions and objects.
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