This is a feature of JBuilder Professional and Enterprise.
The second step of the Javadoc wizard is where you choose:
Note: This page is also displayed in the Javadoc Properties dialog box.
The doclet selected in the first step of the wizard. This field is read-only. To change the doclet, press Back to return to the Choose a doclet page of the wizard.
The name of the documentation node. This name is displayed in the project pane. By default, this is the type of doclet you selected in the previous step.
The output path for the HTML files. By default, this is the doc
directory of your project directory. To change the path, use the ellipsis button to browse to a new directory. If the directory does not exist, JBuilder will create it.
Displays output in the message pane as the HTML files are being generated.
Generates Javadoc when you make or build your project. If you don't choose this option, you can create Javadoc at any time by right-clicking the documentation node in the project pane and choosing Make.