# jep513 — Flexible Constructor Bodies (JEP 513, final in Java 25)

Companion code for the ankurm.com article **Flexible Constructor Bodies in Java 25 (JEP 513): Validate Before super()**. The explanation
lives in the article; this folder holds the runnable sources and the transcripts they produced.

```bash
JDK25=/path/to/jdk-25 JDK27=/path/to/jdk-27 [JDK21=/path/to/jdk-21] ./run.sh    # regenerates output/*.txt
```

`src/` runs; `broken/` fails to compile on purpose (the messages are captured in `output/03`, `07` and `08`). Tested on Temurin 25.0.4.1+1 and 27+35;
JDK 21 is used only to show the "before" error.