Class ForeignFunctionMemoryApiPreviewNotes

java.lang.Object
net.jrodolfo.java_evolution.java19.ForeignFunctionMemoryApiPreviewNotes
public class ForeignFunctionMemoryApiPreviewNotes extends Object
Explains the Foreign Function and Memory API as a Java 19 preview feature.

Native integration in Java traditionally meant JNI, which is powerful but complex and easy to make unsafe. Java developers used it when Java code needed to call operating-system functions, C libraries, or other native libraries that were not written for the Java Virtual Machine.

The Foreign Function and Memory API was introduced to provide a supported model for calling native functions and working with memory outside the Java heap. Java 19 was an early preview step. The API evolved through later releases before becoming final in Java 22.

This repository keeps the Java 19 entry as notes because preserving every historical preview API shape would make the project harder to run. The Java 22 package contains the executable learning module for the final API.

  • Constructor Details

    • ForeignFunctionMemoryApiPreviewNotes

      public ForeignFunctionMemoryApiPreviewNotes()

  • Method Details

    • purpose

      public String purpose()
      Explains the high-level goal.
      Returns:
      a short explanation

    • alternativeTo

      public String alternativeTo()
      Names the older technology this API can replace for many use cases.
      Returns:
      the older technology name

    • commonUseCase

      public String commonUseCase()
      Explains why native integration matters.
      Returns:
      a short explanation

    • projectDecision

      public String projectDecision()
      Explains why this repository keeps it as notes.
      Returns:
      the project decision

    • java19ApiShape

      public String java19ApiShape()
      Returns the central lifecycle API shape from the Java 19 preview.
      Returns:
      Java 19 preview API source shape

    • nextStep

      public String nextStep()
      Points learners to the executable final API module.
      Returns:
      a short next-step note