1. /*
  2. * Copyright 2003-2004 The Apache Software Foundation
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. package org.apache.commons.collections;
  17. /**
  18. * Defines a simple key value pair.
  19. * <p>
  20. * A Map Entry has considerable additional semantics over and above a simple
  21. * key-value pair. This interface defines the minimum key value, with just the
  22. * two get methods.
  23. *
  24. * @since Commons Collections 3.0
  25. * @version $Revision: 1.4 $ $Date: 2004/02/18 01:15:42 $
  26. *
  27. * @author Stephen Colebourne
  28. */
  29. public interface KeyValue {
  30. /**
  31. * Gets the key from the pair.
  32. *
  33. * @return the key
  34. */
  35. Object getKey();
  36. /**
  37. * Gets the value from the pair.
  38. *
  39. * @return the value
  40. */
  41. Object getValue();
  42. }