MrsSbr/amm-java-9-91-2024
Oct 2024 – Jun 2025
5 Months active
Languages Used
GradleJavaSQLCSSHTMLJSPJavaScript
Technical Skills
GradleJava DevelopmentObject-Oriented ProgrammingUnit TestingBackend DevelopmentError Handling
aleckbb
PROFILE
Aleckbb
Over five months, Belozerov developed and enhanced a modular Java backend for the MrsSbr/amm-java-9-91-2024 repository, delivering features such as a flight booking system, data analysis modules, and a pull-based message broker. He applied object-oriented design, robust error handling, and database management using Java, SQL, and Gradle, establishing persistent storage and reliable workflows for bookings, clients, and flights. His work included Bootstrap-based UI improvements, input validation, and automated code quality checks, resulting in maintainable, test-backed code. By focusing on defensive programming and lifecycle cleanup, Belozerov ensured data integrity, resilience, and a solid foundation for future enhancements.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
17Total
Bugs
0
Commits
17
Features
9
Lines of code
3,165
Activity Months5
Your Network
42 people
Work History
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 — Delivered a complete end-to-end Flight Booking System in the MrsSbr/amm-java-9-91-2024 repository, featuring modules for clients, flights, bookings, registration/login, flight listing, seat selection, and booking confirmation. Implemented Bootstrap-based UI enhancements, added logout servlet, and strengthened input validation to improve data integrity and security. This work established a solid, production-ready booking flow and laid groundwork for future UI refinements and extended validation. Commits reflect iterative lab7 work and traceable progress.
2 Commits • 1 Features
Jun 1, 2025June 2025 — Delivered a complete end-to-end Flight Booking System in the MrsSbr/amm-java-9-91-2024 repository, featuring modules for clients, flights, bookings, registration/login, flight listing, seat selection, and booking confirmation. Implemented Bootstrap-based UI enhancements, added logout servlet, and strengthened input validation to improve data integrity and security. This work established a solid, production-ready booking flow and laid groundwork for future UI refinements and extended validation. Commits reflect iterative lab7 work and traceable progress.
June 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 performance summary focusing on business value and technical achievements. Delivered Lab 7: Database-backed data model and persistence layer for bookings, clients, and flights, establishing a durable foundation for end-to-end booking flows and analytics.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 performance summary focusing on business value and technical achievements. Delivered Lab 7: Database-backed data model and persistence layer for bookings, clients, and flights, establishing a durable foundation for end-to-end booking flows and analytics.
December 2024
8 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for the MrsSbr/amm-java-9-91-2024 repository. Focused on validating lab tooling, improving code quality checks, and strengthening messaging reliability across the lab suite. Delivered three features, performed targeted fixes, and cleaned up lifecycle artifacts to improve maintainability and long-term value for the product and its learners.
8 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for the MrsSbr/amm-java-9-91-2024 repository. Focused on validating lab tooling, improving code quality checks, and strengthening messaging reliability across the lab suite. Delivered three features, performed targeted fixes, and cleaned up lifecycle artifacts to improve maintainability and long-term value for the product and its learners.
December 2024
November 2024
5 Commits • 3 Features
Nov 1, 2024Month: 2024-11 — Monthly summary for MrsSbr/amm-java-9-91-2024 highlighting delivered features, bug fixes, and overall impact. Overview: November 2024 focused on reliability, data integrity, and resilience across the Java project. Delivered key features with expanded test coverage, improved error handling, and safer data initialization. These efforts reduce runtime risk, improve data-driven decisions, and provide clearer observability for incident response. The work supports business goals of trustworthy batch processing, accurate calculations, and maintainable code. What was delivered: - BalmerPeakService robustness and test coverage: Enhanced BalmerPeakService with comprehensive tests, null checks, and graceful handling of null or empty lists. Improved accuracy of average amount calculation, unique alcohol type retrieval, and total alcohol amount summation. Commits: 8fda2904abc9b2a653d9d2e0e9b58c681665ebfb; 79cca2b8131d51b13de04b16bc2262104beb7406. - Ship Service and Main Application Improvements: Refactors console output, introduces constants for field indices, and refines 'most rums stocks' filtering to consider ships from the last three years. Added/strengthened tests for edge cases and null inputs. Commit: 730ad5d40c8e8aab63958749d056e6fc259d3af4. - Main Application Error Handling Improvements: Improves exception handling and error reporting in the main class: rethrow IOException, logs stack traces, and ensures file read flow initializes data only after successful read. Commits: 959ed31b4d54ff67bab64211e9172e4528aa5097; 9014777ffa7f555ed4959dfad9e4b8ae6aadb544. Impact: - Business value: More reliable batch processing, fewer run-time failures, and clearer error signals for faster incident resolution. - Technical achievements: Defensive programming improvements, refactoring for maintainability, and better data integrity checks. Technology/Skills demonstrated: - Java: robust service implementation, data processing, and safe initialization flows. - Testing: increased unit/integration test coverage, edge-case validation, and null-input handling. - Observability: improved logging and error reporting to support debugging and root-cause analysis. - Refactoring and standards: use of constants for field indices and clearer console output.
November 2024
5 Commits • 3 Features
Nov 1, 2024Month: 2024-11 — Monthly summary for MrsSbr/amm-java-9-91-2024 highlighting delivered features, bug fixes, and overall impact. Overview: November 2024 focused on reliability, data integrity, and resilience across the Java project. Delivered key features with expanded test coverage, improved error handling, and safer data initialization. These efforts reduce runtime risk, improve data-driven decisions, and provide clearer observability for incident response. The work supports business goals of trustworthy batch processing, accurate calculations, and maintainable code. What was delivered: - BalmerPeakService robustness and test coverage: Enhanced BalmerPeakService with comprehensive tests, null checks, and graceful handling of null or empty lists. Improved accuracy of average amount calculation, unique alcohol type retrieval, and total alcohol amount summation. Commits: 8fda2904abc9b2a653d9d2e0e9b58c681665ebfb; 79cca2b8131d51b13de04b16bc2262104beb7406. - Ship Service and Main Application Improvements: Refactors console output, introduces constants for field indices, and refines 'most rums stocks' filtering to consider ships from the last three years. Added/strengthened tests for edge cases and null inputs. Commit: 730ad5d40c8e8aab63958749d056e6fc259d3af4. - Main Application Error Handling Improvements: Improves exception handling and error reporting in the main class: rethrow IOException, logs stack traces, and ensures file read flow initializes data only after successful read. Commits: 959ed31b4d54ff67bab64211e9172e4528aa5097; 9014777ffa7f555ed4959dfad9e4b8ae6aadb544. Impact: - Business value: More reliable batch processing, fewer run-time failures, and clearer error signals for faster incident resolution. - Technical achievements: Defensive programming improvements, refactoring for maintainability, and better data integrity checks. Technology/Skills demonstrated: - Java: robust service implementation, data processing, and safe initialization flows. - Testing: increased unit/integration test coverage, edge-case validation, and null-input handling. - Observability: improved logging and error reporting to support debugging and root-cause analysis. - Refactoring and standards: use of constants for field indices and clearer console output.
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 (MrsSbr/amm-java-9-91-2024): Delivered Balmer Peak Analysis Module for Lab 3, establishing end-to-end Balmer peak data generation, processing, and analysis. This release includes BalmerPeakService, BalmerPeakRecord data class, AlcoholType enum, a Main demo class, and unit tests to validate correctness. The work advances the lab's learning objectives and provides a repeatable, test-backed data analysis pipeline.
1 Commits • 1 Features
Oct 1, 2024October 2024 (MrsSbr/amm-java-9-91-2024): Delivered Balmer Peak Analysis Module for Lab 3, establishing end-to-end Balmer peak data generation, processing, and analysis. This release includes BalmerPeakService, BalmerPeakRecord data class, AlcoholType enum, a Main demo class, and unit tests to validate correctness. The work advances the lab's learning objectives and provides a repeatable, test-backed data analysis pipeline.
October 2024
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Quality Metrics
Correctness85.8%
Maintainability84.2%
Architecture77.0%
Performance77.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CSSGradleHTMLJSPJavaJavaScriptSQL
Technical Skills
AnnotationsBackend DevelopmentBootstrapBuild ConfigurationBuild ScriptingCode AnalysisCode CleanupConcurrencyDatabase ManagementDependency InjectionError HandlingException HandlingGradleJPA/Hibernate (implied by ORM patterns)JSP
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