Software Programmer Interview Questions and Answers for Freshers

public static void main is the entry point method in Java programs.

• It is a method that is called when a Java program starts running.

• It must be declared as public, static, and void.

• It takes an array of strings as an argument, which can be used to pass command-line arguments to the program.

• Example: public static void main(String[] args) { ... }

ACID is a set of properties that guarantee reliable and consistent transactions in a database system.

• Atomicity ensures that all operations in a transaction are completed successfully or none at all.

• Consistency ensures that the database remains in a valid state before and after the transaction.

• Isolation ensures that the concurrent execution of transactions does not interfere with each other.

• Durability ensures that once a transaction is committed, its effects are permanent even...read more

The architecture of our application follows a microservices design pattern, with separate services for different functionalities.

• Utilizes microservices architecture for scalability and flexibility

• Each service is responsible for a specific function or feature

• Communication between services is done through APIs

• Uses containerization for easy deployment and management

• Data is stored in a distributed database for resilience

Migration refers to the process of moving data or software from one system to another.

• It involves transferring data from an old system to a new one

• Migration can be done manually or through automated tools

• Examples include migrating data from an old database to a new one, or migrating software from one operating system to another