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
private Button fButton;
		private String fFlag;
		private boolean fShowFlag;
		public FlaggedButton(Composite composite, String message, GridData gridData, String flag, boolean show) {
			fFlag= flag;
			fShowFlag= show;
			fButton= createButton(composite, SWT.CHECK, message, gridData);
			fButtonsList.add(this);
			setButtonSettings();
		}
		public Button getButton() {
			return fButton;
		}
		public String getFlag() {
			return fFlag;
		}
		public boolean show() {
			return fShowFlag;
		}
		private void setButtonSettings() {
			fButton.setSelection(!(fStore.getBoolean(fFlag) ^ fShowFlag));
		}
	} 
	private class ListAdapter implements IListAdapter {