Modifying the Ant classpath
When using an optional or custom task it is usually necessary to add extra
libraries to the classpath. To modify the Ant classpath in the Workbench:
- Click Window > Preferences.
- Expand External tools and select Ant. If you are not on it
already, click the Classpath tab.
- To add a JAR file to the classpath, click Add Jar and select the JAR file.
- To add a folder to the classpath, click Add Folder and select the folder.
- To remove an item from the classpath, select it and click Remove.
- To restore the classpath to the default, click Restore Defaults.

Ant support
External tools

Running Ant build files
Running external tools