# hibernate-jpa

Companion code for **Top 40 Hibernate and JPA Interview Questions (2026) with Runnable Answers** on ankurm.com.

One test per question (`src/test/java/lab/hibernate/A_...F_*`). Each test writes its own transcript to `output/qNN-*.txt` and asserts the same facts, so an answer in the article that stops being true fails the build.

| Component | Version |
|---|---|
| Hibernate ORM | 7.4.13.Final |
| PostgreSQL | 16.15 (server), pgjdbc 42.7.14 |
| JUnit | 6.1.3 |
| JDK | 25.0.5 |

```bash
./scripts/start-postgres.sh   # throwaway PostgreSQL on :5433 (or point LAB_DB_URL at your own)
./scripts/run-all.sh          # runs 40 tests, rewrites output/
```

The test JVM runs with `-Duser.timezone=UTC` (see `pom.xml`): a PostgreSQL build without a complete tz database rejects some JVM default zones at connect time.