Bug 21583 Generate Javadoc won't link prereqed projects
In the export wizard for generating javadoc, there is no easy way to link the javadoc from a prereqed project. The wizard has a screen for linking in javadoc from libraries included in the classpath, but projects in the classpath do not show up. I got a temporary workaround from the news group. Just add a "-link URL_TO_OTHER_PROJECT_JAVADOC" in the javadoc options page, but there should be an easier way to do this.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocStandardWizardPage.java
Composite composite= (Composite)super.createDialogArea(parent);			
			Control inner= fJavadocConfigurationBlock.createContents(composite);
			inner.setLayoutData(new GridData(GridData.FILL_BOTH));
			return composite;
		}
		
		public void statusChanged(IStatus status) {
			updateStatus(status);
			
		}
			
		/**
		 * @see Dialog#okPressed()
		 */
		protected void okPressed() {
			fJavadocConfigurationBlock.performOk();
			super.okPressed();
			
			fListDialogField.refresh();
		}
		/*
		 * @see org.eclipse.jface.window.Window#configureShell(Shell)
		 */
		protected void configureShell(Shell newShell) {
			super.configureShell(newShell);
			WorkbenchHelp.setHelp(newShell, IJavaHelpContextIds.JAVADOC_PROPERTY_DIALOG);
		}
	}
}