This section describes the APIs, features, and options that were removed in Java SE 18 and JDK 18. The APIs described here are those that are provided with the Oracle JDK. It includes a complete implementation of the Java SE 18 Platform and additional Java APIs to support developing, debugging, and monitoring Java applications. Another source of information about important enhancements and new features in Java SE 18 and JDK 18 is the [Java SE 18 ( JSR 393)](https://cr.openjdk.java.net/~iris/se/18/latestSpec/) Platform Specification, which documents changes to the specification made between Java SE 17 and Java SE 18. This document includes the identification of removed APIs and features not described here. The descriptions below might also identify potential compatibility issues that you could encounter when migrating to JDK 18. See [CSRs Approved for JDK 18](https://bugs.openjdk.java.net/issues/?filter=41149) for the list of CSRs closed in JDK 18.