Eclipse Generate JAR Package
Open the JAR File Wizard
The JAR File Wizard is used to export projects as runnable JAR packages.
Steps to open the wizard:
Select the project content you want to export in the Package Explorer. If you want to export all classes and resources in the project, simply select the entire project.
Click the File menu and choose Export.
Type "JAR" in the input box.
Select the JAR file option to start the wizard.
Click the Next button.
Using the JAR File Wizard
On the JAR File Specification page, you can perform the following actions:
Enter the JAR file name and folder.
By default, only class files are exported. You can also export source files and resources by checking the "Export Java source files and resources" option.
Click the Next button to modify JAR package options.
Click the Next button to modify JAR Manifest description information.
Click the Finish button to complete the operation.