Aurus Interview Questions and Answers

A payment gateway is a technology that facilitates online transactions between customers and merchants.

• Acts as a bridge between the customer and the merchant's bank.

• Encrypts sensitive information like credit card numbers for security.

• Examples include PayPal, Stripe, and Square.

• Supports various payment methods such as credit cards, debit cards, and digital wallets.

• Integrates with e-commerce platforms to streamline ...read more

A linked list is a linear data structure where elements are stored in nodes, each pointing to the next node.

• Consists of nodes, each containing data and a reference to the next node.

• Types include singly linked lists, doubly linked lists, and circular linked lists.

• Singly linked list: Each node points to the next node (e.g., 1 -> 2 -> 3).

• Doubly linked list: Each node points to both the next and previous nodes (...read more

Strings are sequences of characters used to represent text in programming languages.

• Strings can be mutable or immutable, e.g., Python strings are immutable.

• They can be concatenated using operators, e.g., 'Hello' + ' World' results in 'Hello World'.

• Strings can be indexed, e.g., in 'Hello', 'H' is at index 0.

• Common methods include .length(), .toUpperCase(), and .substring().

Polymorphism allows objects to be treated as instances of their parent class, enabling method overriding and interface implementation.

• Polymorphism is a core concept in Object-Oriented Programming (OOP).

• It allows methods to do different things based on the object it is acting upon.

• Example: A function that takes a base class type can accept any derived class type.

• Method Overriding: A subclass can provide a specific ...read more

JVM, JRE, and JDK are essential components of Java development, with JVM executing Java programs, JRE providing libraries and tools, and JDK including JRE along with development tools.

• JVM (Java Virtual Machine) is responsible for executing Java programs by converting bytecode into machine code.

• JRE (Java Runtime Environment) includes JVM, libraries, and other necessary components to run Java applications.

• JDK (Java ...read more

No, multiple try blocks are needed for handling different exceptions.

• Multiple try blocks are needed to handle different types of exceptions separately.

• Each try block can have its own catch block to handle specific exceptions.

• Using a single try block for all exceptions can lead to confusion and improper handling.