Make sure the component project has been built. If Build Automatically is not enabled on the Project menu, then do the following:
Select the component project in Package Explorer.
Click Project > Build Project.
The src\platform folder should contain a .jar file after a successful build.
Determine whether to include or reference the component:
An included component does not update with changes made to the original component project. Do the following to include a component:
Make sure the workflow solution project appears in Package Explorer.
Click and drag the .jar file from the src\platform folder of the component project to the root folder of the workflow solution project.
A referenced component updates if the original component project is changed and rebuilt. Do the following to reference a component:
Right-click the workflow solution project folder in the Package Explorer pane, and then click Properties.
Select Project References from the list.
Select the check box beside the component project you want to reference in the workflow solution project.
Click OK.