TransitiveObserver.java 1.4 KB

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  1. /*
  2. * Licensed to the Apache Software Foundation (ASF) under one or more
  3. * contributor license agreements. See the NOTICE file distributed with
  4. * this work for additional information regarding copyright ownership.
  5. * The ASF licenses this file to You under the Apache License, Version 2.0
  6. * (the "License"); you may not use this file except in compliance with
  7. * the License. You may obtain a copy of the License at
  8. *
  9. * http://www.apache.org/licenses/LICENSE-2.0
  10. *
  11. * Unless required by applicable law or agreed to in writing, software
  12. * distributed under the License is distributed on an "AS IS" BASIS,
  13. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14. * See the License for the specific language governing permissions and
  15. * limitations under the License.
  16. */
  17. package YaoGC;
  18. /**
  19. * {@code Observer} is the interface to be implemented by objects that receive
  20. * notification of updates on an {@code Observable} object.
  21. *
  22. * @see Observable
  23. */
  24. public interface TransitiveObserver {
  25. /**
  26. * This method is called if the specified {@code Observable} object's
  27. * {@code notifyObservers} method is called (because the {@code Observable}
  28. * object has been updated.
  29. *
  30. * @param observable
  31. * the {@link Observable} object.
  32. * @param data
  33. * the data passed to {@link Observable#notifyObservers(Object)}.
  34. */
  35. void update(boolean evaluate, TransitiveObservable observable, Object data);
  36. }