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Template Method: sync post code blocks to repo exactly (DataMigration/CsvMigration/ApiMigration were entirely different from repo), Java 25, H6 file labels, fix stale console output, README mapping

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2026-06-24 17:33:55 +05:30
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@@ -445,6 +445,21 @@ javac 03-behavioral/strategy/*.java -d out/strategy
java -cp out/strategy strategy.Main
```
### Template Method (`03-behavioral/template-method/`)
| Post Section | File(s) |
|---|---|
| Implementation: Data Migration Pipeline — the abstract class & template method | `DataMigration.java` |
| Implementation: Data Migration Pipeline — CsvMigration | `CsvMigration.java` |
| Implementation: Data Migration Pipeline — ApiMigration | `ApiMigration.java` |
| Implementation: Data Migration Pipeline — wiring it together | `Main.java` |
Run it:
```bash
javac 03-behavioral/template-method/*.java -d out/template-method
java -cp out/template-method template.Main
```
## Reference
- *Design Patterns: Elements of Reusable Object-Oriented Software* — Gamma, Helm, Johnson, Vlissides