We have an interface that has a child interface. Ie:
public interface GenCalculator extends Serializable {} public interface SpecialCalculator extends GenCalcu
You can't do it in only one search.
May be you could use the "Text Search" option and wildcards, something like searching for "*s YourInterfaceName" (trying to catch "extends YourInterfaceName" and "implements YourInterfaceName") but is too tricky.