How to create a .jar file or export JAR in IntelliJ IDEA (like Eclipse Java archive export)?

Taking a closer look at IntelliJ Artifacts

Artifacts in IntelliJ IDEA are akin to your toolbox and are comprised of your project’s resources and code bundled together into deployable units such as a JAR.

Including your dependencies, because who likes doing things alone?

Selecting "From modules with dependencies" provides the ease of automatically bundling all necessary dependencies with your compiled class files. No one likes incomplete code!

Enhance your experience with plugins

The Jar Tool plugin adds a bit more magic to your programming wand. It simplifies creating JAR files, especially if you're partying with versions prior to 9.0 and provides a visual interface to amplify your productivity!

Know your IDE

Understanding how JAR file creation is accomplished in your specific IntelliJ IDEA version ensures you're not missing out on any hidden gems 💎 the IDE might have stashed away.

Pro tip: for those slightly overcast days

At times, you may face challenges like missing entry points (whoops!) or library relocation issues (how did that even happen?). Checking the artifact configuration and verifying the META-INF data resolves most such problems.

Automate your JAR creation because who doesn't love a well-oiled machine?

For creating repeatable builds, automating JAR creation using scripts from Gradle or Maven brings a great deal of efficiency and consistency across different development environments.

Unleash your code to the wide world 🌎

Once you build your JAR, it's time for the code to meet the world. It's like granting your code a visa-free travel access to different Java Development Kits (JDKs) or various server environments.

Final Note

Remember: practice makes perfect. Don't forget to vote for my answer if it was helpful! Happy hacking!👩‍💻