- 1 year ago
How to create an executable file from a jar for mac os (using windows or linux) with a JRE included
To create an executable file from a JAR with a bundled JRE for macOS using Windows or Linux, you can use the jpackage
tool provided by OpenJDK. Here's a general outline of the process:
Install OpenJDK: Ensure that you have OpenJDK installed on your Windows or Linux machine. You can download and install the appropriate version of OpenJDK for your platform.
Package the JAR with JRE: Use the
jpackage
tool to bundle the JAR file along with a JRE for macOS. Thejpackage
tool is available from OpenJDK 14 onwards. Here's an example command:cssjpackage --input /path/to/your/jar \
--main-class your.main.Class \
--name YourAppName \
--type app-image \
--dest /output/folder \
--mac-package-identifier com.yourcompany.yourapp \
--java-options "-Xmx256m"
Replace
/path/to/your/jar
with the actual path to your JAR file,your.main.Class
with the main class of your application,YourAppName
with the desired name for your macOS application, and/output/folder
with the path where you want to generate the output application package.Adjust other options like
--mac-package-identifier
to match your app's identifier, and--java-options
to specify any required JVM options.Transfer to macOS: Once the packaging is complete, transfer the generated application package to a macOS machine.
Sign the Application (Optional): To distribute the macOS application, you may need to sign it with a valid Apple Developer certificate. This step is optional but recommended if you plan to distribute the application outside your own environment.
You can use the
codesign
command on macOS to sign the application. Here's an example command:csscodesign --deep --force --verify --verbose --sign "Developer ID Application: Your Company" /path/to/YourAppName.app
Replace
/path/to/YourAppName.app
with the path to your generated application package.
By following these steps, you can create an executable file (application package) from your JAR with a bundled JRE for macOS, using either a Windows or Linux machine. Remember to adjust the commands and options as per your specific requirements and environment.