If you are adding a library to an existing Sun Java Composite Application Platform Suite installation, do the following:
Complete steps 1 through 4 above.
Open the Enterprise Designer and select Update Center from the Tools menu. The Update Center Wizard appears.
For Step 1 of the wizard, simply click Next.
For Step 2 of the wizard, click the Add All button to move all installable files to the Include in Install field, then click Next.
For Step 3 of the wizard, wait for the modules to download, then click Next.
The wizard’s Step 4 window displays the installed modules. Review the installed modules and click Finish.
When prompted, restart the IDE (Integrated Development Environment) to complete the installation.