It's better to persist data with Hibernate and Java Persistence API or save information to a NoSQL database, but that is beyond the scope of this JAX-RS tutorial. Step 3: Code the JAX-RS Service class ...

Java records are a new language feature that reduces verbosity and enables optimized runtime performance. This Java records tutorial shows how they work.

For more on that, check out our guide to Android development for beginners. For the purposes of this Java tutorial, it may be easier to write your code directly into a Java compiler app.