Panama 4 Newbies

This is a quick intro to OpenJDK's Project Panama.

• Part 1 https://foojay.io/today/project-panama-for-newbies-part-1
• Part 2 https://foojay.io/today/project-panama-for-newbies-part-2
• Part 3 https://foojay.io/today/project-panama-for-newbies-part-3
• Part 4 https://foojay.io/today/project-panama-for-newbies-part-4

Part 1 - Learning Java Panama and C primitive types

Part 1 is where you'll learn about jextract and Panama APIs to create C primitive type data and use the printf() function from stdio.h. https://github.com/carldea/panama4newbies/tree/main/part01

Part 2 - Learning Java Panama and C Pointers and Structs

Part 2 you'll increase your knowledge on using Panama APIs to mimic C Pointers and create structs to hold complex data. https://github.com/carldea/panama4newbies/tree/main/part02

Part 3 - Learning Java Panama and C based Third Party Libraries

Part 3 is a chance to use Panama APIs to access third party libraries. https://github.com/carldea/panama4newbies/tree/main/part03

Part 4 - Learning Java Panama and C based Callbacks (Function Pointers)

Part 4 is a chance to use Panama APIs to allow C code to talk to Java code. https://github.com/carldea/panama4newbies/tree/main/part04

Requirements

1. Java JDK 25+
2. JExtract 25+ https://jdk.java.net/jextract/
3. Clang

Installing C compiler

MacOs

xcode-select --install

Debian

sudo apt update
sudo apt install clang

Fedora/RHEL:

# For RHEL 8 or newer/Fedora
sudo dnf install clang

# Or using yum for older RHEL versions
sudo yum install llvm-toolset

Arch Linux

sudo pacman -S clang

Windows MSYS2 package manager

pacman -S mingw-w64-clang-x86_64-clang

Setting up your environment

1. Download Jextract for your OS (https://jdk.java.net/jextract/) and unzip to a directory.
2. Download JDK for your OS (https://www.azul.com/downloads/?package=jdk#zulu)
3. Setup environment variables JAVA_HOME and JEXTRACT_HOME and run the following:

View and modify the file setup.sh.

JEXTRACT_HOME="<path to jextract>" sh setup.sh

Note/Warning: The setup.sh script is for your convenience, but feel free to skip to the next section if you already installed your JDK and Jextract downloads and setup things to your liking.

Assuming things are set up you should verify with the following commands:

$ java -version
$ jextract -h 

Getting Started:

1. Clone this project

git clone git@github.com:carldea/panama4newbies.git

2. Change directory to panama4newbies/Part01.
3. Go to Part 1 and follow the steps (readme.md)
4. Blog article can be found here: - Part 1 https://foojay.io/today/project-panama-for-newbies-part-1