#Is it possible for me to turn my code into an executable so that others can use it?

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gray stump
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Is it possible for me to turn my java code in intelliJ into an executable so that others can use it?

steep gullBOT
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<@&987246527741304832> please have a look, thanks.

steep gullBOT
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Yes, it is possible to turn your Java code in IntelliJ into an executable so that others can use it. IntelliJ IDEA provides a built-in feature to create executable JAR files.

Here are the steps to create an executable JAR file in IntelliJ:

  1. Open your Java project in IntelliJ IDEA.
  2. Go to the "File" menu and select "Project Structure".
  3. In the Project Structure dialog, navigate to "Artifacts" under the "Project Settings" section.
  4. Click on the "+" button and select "JAR" from the dropdown menu.
  5. Choose "From modules with dependencies".
  6. Select your main class from the dropdown list.
  7. Specify the output directory for the JAR file.
  8. Click on "OK" to save the changes.

Once you have configured the artifact, you can build it by going to the "Build" menu and selecting "Build Artifacts". Choose your artifact and select "Build".

After building, you will find your executable JAR file in the specified output directory. Others can now use this JAR file by executing it using Java runtime environment.

Note: Make sure that all necessary dependencies are included in your project's classpath before creating an executable JAR file, as they will be required for proper execution of your code on other systems.

gray stump
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like would the person running the project require a JVM

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or can they just click it and it will run#

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like a .exe

real tree
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Both is possible

steep gullBOT
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Due to the JVM and bytecode as intermediate execution stage, turning a Java application into a standalone executable (exe, msi, deb, rpm, dmg, pkg) is not trivial.
However, there exist various tools to do the job. They mostly differ in the details of the solution they create and hence also in their purpose:

  • jpackage (the official tool) - creates an installer
  • Launch4J - creates a wrapper executable that unwraps on execution
  • GraalVM - attempts to create an actual native executable instead of wrappers or installers

This guide explains how to use jpackage, an official tool that is available in all JDKs since Java 16. The tool creates an installer for the application, so the end-user will get an executable that guides them through a setup where they can select installation path and tweak other settings, finally resulting in the application being installed on the machine (with a proper uninstaller, desktop shortcuts, start menu entries, ...): https://i.imgur.com/2V5ovUu.png

As an example, suppose you have a fat jar of your application called HelloWorld.jar, with a main class called Main. Put the jar into a dedicated release folder for simplicity. Execute the following command and you have an installer for your application in a folder called installer:

jpackage --input "release" --dest "installer" --main-class "Main" --main-jar "HelloWorld.jar" --name "HelloWorld" --win-dir-chooser --win-menu --win-shortcut --type exe

See the official documentation for more information on the available commands and for other operating systems:

Here is an example for a more complex setup which also associates file endings to the application, has a custom icon and more: https://pastebin.com/cfzqSKnW

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