How to Export a JAR File in Eclipse Including External Libraries?

Exporting a Jar with External Libraries in Eclipse

When working on a project that utilizes external libraries, packaging it as a jar for distribution or use in other applications becomes necessary. Eclipse provides convenient features to facilitate this process.

Packaging External Libraries in a Jar

To include external libraries in your jar, follow the steps outlined in the solution provided:

1. Right-click on your project and navigate to Export > Runnable JAR.
2. On the "Export Runnable JAR" dialog, select the Package required libraries into generated JAR checkbox under the "Export destination" section. This option ensures that all necessary dependencies are bundled with your jar.
3. Choose the appropriate Launch configuration from the drop-down list. This determines the main class to be executed when the jar is run.

Alternative Packaging Methods

In addition to the aforementioned method, Eclipse offers two other packaging options:

1. Extract required libraries into generated JAR: This creates a separate JAR for the external libraries.
2. Don't package any libraries bundled with container: This excludes container-based libraries from the jar.

Exporting as a Regular Jar

If you do not require a runnable jar, you can export a regular jar by excluding the "Runnable JAR" option in the export dialog. However, external dependencies like those managed by Maven cannot be included directly in a regular jar.

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