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摘要： # change owner of all the fies under dirNamechown -R username dirName#change owner and the file group of all the files under dirNamechown -R username:groupName dirName 阅读全文

摘要： <S>public interface EventBase<S> { void onEvent(S source, Object[]... arguments);}<S,T extends EventBase<S>>public class EventSender<S, T> { private List<T> receivers = new ArrayList<T>(); public void addReceiver(T receiver) { if (null == receiver) throw new 阅读全文