To incorporate third-party Java functionality into Pega Platform™, you need to import a Java archive (JAR) file or class. Standard JAR files typify as database drivers used for external database connections; third-party functions requiring import of a custom JAR file include incorporating IP filtering into your enterprise network, adding a functionality from Snowflake or its partners, or supporting IBM WebSphere Message Queue for inter-application communication in a Java environment.

To incorporate additional functions into your environment, you must perform the following tasks:

1. Set up a custom codeset version.
2. Import a custom JAR or class file.

Each task is described below.

To set up a custom codeset version:

1. In the navigation pane of Dev Studio, click Records > SysAdmin > Dynamic System Settings.
2. Find the code engine dynamic system setting with the following Setting Purpose:

properties/com.pega.pegarules.bootstrap.codeset.version.Customer/default

3. Open the dynamic system setting.
4. In the top navigation pane, click Save > Save As.
5. In the Setting Purpose field, edit Customer to the name of your codeset.
6. Click Create and Open.
7. In the Value field, enter 01-01-01 as a codeset version.
8. Click Save.

Pega Platform can now check against an existing codeset name and version when importing a customer Java archive or class.

To import a custom Java archive or class:

1. In the header of Dev Studio, click Configure > Application > Distribution > Import.
2. In the Application Import Wizard, select whether you want to import the JAR or class file from the following directory types:
   • Local File
   • From Repository
   • File on Server
3. Navigate to the location of the JAR or class file.
4. Click Next.
   Pega Platform displays a page of the JAR file details.
5. Confirm the details of the JAR file, then click Next.
6. In the Code Archive page, enter the Codeset name and the Codeset version as defined in the dynamic system setting.
7. Click Next to finish the import.
8. Restart your environment to import the JAR file into the version of the codeset.
   • For Pega Cloud environments, file a service request from My Support Portal to restart the application server of your Pega Cloud instance. 
     For more information, see Self-managing your Pega Cloud environments from My Support Portal.
   • For on-premises environments, restart the application server.