Java SE 17: Programming Complete — Lesson 4: Modules, JDBC, Security, Packaging, Diagnostics, and Certification Practice

Learning Objectives

• Explain the purpose and operating context of Java Platform Module System, requires, exports, services, and migration.
• Apply JDBC connections, prepared statements, transactions, result sets, and pooling awareness and security APIs, permissions awareness, cryptography basics, and secure coding in a controlled environment.
• Validate outcomes and troubleshoot risks involving JARs, jlink awareness, logging, debugging, performance, exam scenarios, and deployment runbook.

Detailed Topics

• Java Platform Module System, requires, exports, services, and migration
• JDBC connections, prepared statements, transactions, result sets, and pooling awareness
• security APIs, permissions awareness, cryptography basics, and secure coding
• JARs, jlink awareness, logging, debugging, performance, exam scenarios, and deployment runbook

Instructor Demonstration

Demonstrate Java Platform Module System, requires, exports, services, and migration for a modular Java application implemented from core language design through concurrent processing and database integration; capture the exact configuration, code, command, transaction, query, dashboard, model, schedule, or report evidence that proves the expected result.

Hands-On Exercise

Complete a controlled Java SE 17: Programming Complete exercise covering JDBC connections, prepared statements, transactions, result sets, and pooling awareness and security APIs, permissions awareness, cryptography basics, and secure coding; introduce an exception involving JARs, jlink awareness, logging, debugging, performance, exam scenarios, and deployment runbook, diagnose it from evidence, apply the smallest reversible correction, and rerun acceptance checks.

1. Confirm scope, prerequisites, identities, dependencies, data, risks, and expected outcome.
2. Perform the course-specific configuration, development, administration, analysis, or business-process workflow.
3. Capture commands, settings, records, logs, screenshots, reports, metrics, or test results.
4. Compare the observed result with acceptance criteria and document corrective or preventive action.

Scenario Analysis

• Identify the technical or business decision and the stakeholders affected by it.
• Compare security, performance, reliability, compliance, cost, usability, and support trade-offs.
• Define rollback, recovery, communication, evidence, ownership, and escalation requirements.

Troubleshooting Guidance

Diagnose issues involving Java Platform Module System, requires, exports, services, and migration, JDBC connections, prepared statements, transactions, result sets, and pooling awareness, security APIs, permissions awareness, cryptography basics, and secure coding, JARs, jlink awareness, logging, debugging, performance, exam scenarios, and deployment runbook without making an unverified production change. Separate symptoms from causes, gather time-correlated evidence, test a reversible hypothesis, validate the correction, and record recurrence controls.

Validation Checklist

• The requirement, environment, inputs, dependencies, and expected result are documented.
• The result is reproducible and supported by product-specific evidence.
• Normal, boundary, failure, security, performance, and operational conditions are reviewed.
• Exceptions, rollback, ownership, support actions, and the next improvement priority are recorded.

Lesson Outcome

Learners can apply Modules, JDBC, Security, Packaging, Diagnostics, and Certification Practice in a realistic Java SE 17: Programming Complete scenario and defend the result with documented evidence.