In Netbeans, if I were to write the following javadoc, I would get additional info from the auto completion.

/**
 * @param a The first var.
 * @return The second var.
 */
public int test(int a)
{
}

So when "a" is bolded in the autocompletion, the text "The first var" would appear on the next line of the function signature. This would be a very nice feature to have especially for those coders who use overloaded functions to provide very different functionalities.