Sridevi Fertility Center Interview Questions and Answers

OOPS is a programming paradigm based on the concept of objects that interact with each other.

• OOPS focuses on encapsulation, inheritance, and polymorphism.

• Encapsulation is the process of hiding implementation details and exposing only the necessary information.

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

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

• For example, a car can be considered an ob...read more

Annotations in Spring Boot are used to provide additional information to the Spring framework.

• Annotations are used to configure the Spring framework and simplify the code.

• Some commonly used annotations in Spring Boot are @Controller, @Service, @Repository, @Autowired, @Component, @Configuration, @RequestMapping, @PathVariable, @RequestBody, @ResponseStatus, @ExceptionHandler, @EnableAutoConfiguration, @SpringBootApplication.

• These annotations help in defining the components, m...read more

Multithreading can improve performance and responsiveness of AWT Swing applications.

• Multithreading can be used to perform time-consuming tasks in the background while keeping the UI responsive.

• SwingWorker class can be used to perform background tasks and update the UI when done.

• Event Dispatch Thread (EDT) should be used to update the UI components.

• Synchronization should be used to avoid race conditions and ensure thread safety.

• Thread pools can be used to manage and reuse thre...read more

Different collection in Java have different implementations of Data Structures.

• ArrayList: Resizable array implementation

• LinkedList: Doubly linked list implementation

• HashSet: Unordered collection of unique elements

• TreeSet: Sorted set implementation using a tree structure

• HashMap: Unordered map implementation using key-value pairs

• TreeMap: Sorted map implementation using a tree structure

Multi threading is the ability of a program to perform multiple tasks concurrently.

• It allows for better utilization of CPU resources

• Threads share the same memory space

• Synchronization is required to avoid race conditions

• Examples include web servers handling multiple requests simultaneously

A singleton class is a class that can only have one instance created at a time.

• Singleton classes are often used for managing resources that should only have one instance, such as a database connection.

• They typically have a private constructor to prevent multiple instances from being created.

• The instance of the class is usually accessed through a static method or variable.

• Singleton classes can also implement interfaces or inherit from other classes.

• Example: Java's Runtime clas...read more

Code for catching an exception in C#

• Use try-catch block to catch exceptions

• Handle specific exceptions using multiple catch blocks

• Use finally block to execute code regardless of exception

• Throw custom exceptions using throw keyword

Software testing is the process of evaluating a software application or system to find defects and ensure it meets the specified requirements.

• Testing is done to identify defects or bugs in the software

• It ensures that the software meets the specified requirements

• It involves executing test cases and comparing actual results with expected results

• It can be done manually or using automated tools

• Types of testing include functional, performance, security, and usability testing