Java_18_Features - Deprecations and Deletions

Again in Java 18, some features have been marked as "deprecated for removal" or deleted.

Java_18_Features - Pattern Matching for switch , Foreign Function & Memory API

This is a core language update. The change aims to enhance switch statements and expressions.

Java_18_Features Vector API

The Vector API was already introduced in Java 16 and Java 17 as an Incubator feature. This API is not about the java.util.Vector class from Java 1.0 but about mathematical vector computation and its mapping to modern single-instruction-multiple-data (SIMD) architectures.

Java_18_Features - Internet-Address Resolution SPI - Foreign Function & Memory API

The java.net.InetAddress API resolves host names to Internet Protocol (IP) addresses, and vice versa. In the current implementation, this API uses the OS’s native resolver (typically configured with a combination of a local hosts file and the DNS).

Java_18_Features - Reimplement Core Reflection with Method Handles

If you have a lot to do with Java reflection, you will know that there is always more than one way to go. For example, to read the private value field of a String via reflection.

Java_18_Features - Code Snippets in Java API Doc

Java 18 Introduces the @snippet tag for JavaDoc’s Standard Doclet to simplify the inclusion of example source code in API documentation that will be displayed in the generated document.

Java_18_Features - UTF-8 by Default - Simple Web Server