Flatpak Java Launcher

Description

This project provides a Flatpak manifest and a launcher script for running Java JAR files in a Flatpak environment. When run, it opens a file selection dialog (via Zenity) allowing the user to choose a JAR file, which it then executes using a bundled OpenJDK 11 runtime.

Features

• Integrates OpenJDK 11 within the Flatpak environment
• Provides a simple launcher script to select and run JAR files
• Leverages Flatpak's sandboxing features for resource control and permission management

Project File Overview

• io.github.overwatcheddude.flatpak_java_launcher.desktop: A desktop entry file used by the system to integrate the application into the desktop environment (menus, icons, etc.).
• io.github.overwatcheddude.flatpak_java_launcher.svg: An SVG icon file representing the application.
• io.github.overwatcheddude.flatpak_java_launcher.yml: The Flatpak manifest file that defines the application's runtime, SDK, dependencies, and permissions.
• java_launcher.sh: A shell script that prompts the user to select a JAR file and then executes it using the included OpenJDK 11 runtime.
• LICENSE: The file detailing the legal terms under which the software is distributed.
• README.md: Refers to this documentation.

Building and Running

Install Flatpak

Ensure you have Flatpak installed on your system. Refer to the official Flatpak documentation for installation instructions: https://flatpak.org/setup/

Obtaining the Repository

Cloning with Git

If you have Git installed, you can clone the repository using the following command:

git clone https://github.com/overwatcheddude/Flatpak_Java_Launcher.git

Downloading as a .zip File

If you don't have Git, you can download the repository as a .zip file by clicking the "Code" button on the GitHub repository page and then selecting "Download ZIP". Ensure to extract the contents of the .zip file.

Dependencies

Before building, ensure you have the following Flatpak dependencies installed:

flatpak install flathub org.flatpak.Builder org.freedesktop.Platform//24.08 org.freedesktop.Sdk//24.08 runtime/org.freedesktop.Sdk.Extension.openjdk11/x86_64/24.08

Build the Flatpak:

Open a terminal in the project directory. Run the following command to build the Flatpak:

flatpak run org.flatpak.Builder --user --install --force-clean build-dir io.github.overwatcheddude.flatpak_java_launcher.yml

Run the Launcher:

After successful build, run the launcher using:

flatpak run io.github.overwatcheddude.flatpak_java_launcher

The launcher will prompt you to select a JAR file to execute.