Bootlegger Interview Questions and Answers

String is immutable in Java to ensure security, synchronization, and performance.

• Immutable strings are thread-safe and can be shared across multiple threads without the risk of data corruption.

• String pool in Java is possible because of immutability, which saves memory and improves performance.

• String objects can be used as keys in HashMap because of immutability.

• StringBuffer and StringBuilder classes are used for mutable string operations.

BRD stands for Business Requirements Document. It is a formal document that outlines the requirements of a project.

• BRD describes the business solution for a project

• Components of BRD include project scope, objectives, stakeholders, functional requirements, non-functional requirements, assumptions, constraints, and acceptance criteria

• BRD helps in ensuring that the project meets the business needs and objectives

• Example: A BRD for a software development project would include deta...read more

Inner join is a type of join in SQL that returns only the rows that have matching values in both tables being joined.

• Inner join combines rows from two tables based on a related column between them

• It returns only the rows that have matching values in both tables

• If there is no match, the rows are not included in the result set

FRD stands for Functional Requirements Document. It outlines the necessary functions and features of a system or product.

• FRD describes the functionality of a system or product

• It includes detailed descriptions of features and requirements

• FRD helps ensure that the final product meets the needs of the users

Collections and Interface in Java

• Collections are used to store and manipulate groups of objects in Java

• Interfaces define a set of methods that a class must implement

• Java provides several built-in interfaces for collections such as List, Set, and Map

• Collections can be sorted using the Comparable or Comparator interfaces

Git is a version control system used for tracking changes in code. It has various commands for managing repositories.

• Git is used for version control and collaboration in software development.

• Common commands include git add, git commit, git push, and git pull.

• Git branches allow for parallel development and merging of code.

• Git can be integrated with continuous integration and deployment tools.

• Git also has features for managing conflicts and reverting changes.

ELK is a data analytics platform used for log analysis and visualization.

• ELK stands for Elasticsearch, Logstash, and Kibana.

• Elasticsearch is a search and analytics engine used to store and search data.

• Logstash is a data processing pipeline used to collect, parse, and transform data.

• Kibana is a data visualization tool used to create dashboards and reports.

• ELK is commonly used for log analysis and monitoring in DevOps.

• ELK can be used to monitor server logs, application logs, an...read more