Two-Step Change Method

Guide Java developers through complex or risky changes by keeping design preparation separate from behavior modification. This is an interactive SKILL.

What is covered in this Skill?

• Clarifying the intended behavior change before editing
• Identifying design obstacles that make the change difficult or risky
• Step 1: behavior-preserving preparatory refactoring that makes the change easy
• Validation that Step 1 preserves existing behavior
• Step 2: the smallest intended behavior change after the design supports it
• Verification that Step 2 delivers the intended behavior
• Handoff to focused Java, framework, persistence, messaging, API, or testing skills while preserving the two-step sequence

Constraints

Separate behavior-preserving preparation from behavior-changing work, and validate after each step.