Using the Options window, you can set options for running the Javadoc tool, such as which Javadoc doclet, search engine, and executor to use. The nodes for changing Javadoc options are under the Code Documentation node.
For help with setting Javadoc options, see:
Turning Off Exact Case Matching
Specifying an Output Directory for Javadoc Files
Specifying a Style Sheet for Javadoc Documentation
Modifying Doclet Properties
Specifying the Default Search Engine
Specifying the Default Javadoc Executor