java-migration
Java Migration Skill
Step-by-step guide for upgrading Java projects between major versions.
When to Use
- User says "upgrade to Java 25" / "migrate from Java 8" / "update Java version"
- Modernizing legacy projects
- Spring Boot 2.x → 3.x → 4.x migration
- Preparing for LTS version adoption
Migration Paths
Java 8 (LTS) → Java 11 (LTS) → Java 17 (LTS) → Java 21 (LTS) → Java 25 (LTS)
│ │ │ │ │
└──────────────┴───────────────┴──────────────┴───────────────┘
Always migrate LTS → LTS
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