Spring Fundamentals — Lesson 1: Spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning

Learning Objectives

• Map the roles, prerequisites, data, dependencies, and expected outcome for spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning.
• Build a controlled spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning workflow and record evidence at each decision point.
• Evaluate the result against correctness, security, recovery, performance, and support criteria.

Detailed Topics

• Spring architecture
• IoC container
• dependency injection
• beans
• configuration styles
• component scanning
• Ownership, prerequisites, data, and acceptance criteria for spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning
• Security, control, integration, performance, recovery, compliance, and support implications

Instructor Demonstration

Demonstrate spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning within a maintainable Spring application assembled through dependency injection, web, data-access, testing, and production-readiness practices. Use representative data and capture application context and bean report so another practitioner can reproduce and verify the result.

Hands-On Exercise

Complete a controlled activity focused on spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning. Introduce a realistic case of bean dependency cannot be resolved, isolate the cause, apply a reversible correction, and rerun the acceptance checks.

1. Record the requirement, environment, identities, dependencies, data, controls, and expected result.
2. Perform the workflow and capture course-specific evidence before and after each material change.
3. Test normal, boundary, failure, security, reconciliation, recovery, and operational conditions.
4. Document the root cause, correction, rollback, owner, support action, and next improvement priority.

Scenario Analysis

• Establish the current state, desired state, constraints, owners, and acceptable service impact.
• Compare implementation choices for spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning and their rollback consequences.
• Define acceptance evidence based on application context and bean report, then assign the next improvement owner.

Troubleshooting Guidance

When spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning does not produce the expected result, confirm scope, effective dates, identities, data context, dependencies, and recent changes. Review application context and bean report before modifying configuration or data. Test one reversible hypothesis at a time, verify recovery, and confirm that the fix does not create a new control, security, performance, compliance, or integration defect.

Validation Checklist

• Prerequisites, ownership, data context, settings, and expected outcomes are documented.
• The result is reproducible and supported by application context and bean report.
• Security, controls, data quality, integration, performance, recovery, compliance, and support conditions are reviewed.
• Exceptions, corrective action, rollback, approvals, monitoring, and handover are recorded.

Lesson Outcome

Learners can apply Spring architecture, IoC container, dependency injection, beans, configuration styles, component scanning in a realistic Spring Fundamentals situation and defend the result with course-specific evidence.