01: /*
02: * Copyright 2007 Google Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License"); you may not
05: * use this file except in compliance with the License. You may obtain a copy of
06: * the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12: * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13: * License for the specific language governing permissions and limitations under
14: * the License.
15: */
16: package java.util;
17:
18: /**
19: * General-purpose interface for storing collections of objects. <a
20: * href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Collection.html">[Sun
21: * docs]</a>
22: *
23: * @param <E> element type
24: */
25: public interface Collection<E> extends Iterable<E> {
26:
27: boolean add(E o);
28:
29: boolean addAll(Collection<? extends E> c);
30:
31: void clear();
32:
33: boolean contains(Object o);
34:
35: boolean containsAll(Collection<?> c);
36:
37: boolean equals(Object o);
38:
39: int hashCode();
40:
41: boolean isEmpty();
42:
43: Iterator<E> iterator();
44:
45: boolean remove(Object o);
46:
47: boolean removeAll(Collection<?> c);
48:
49: boolean retainAll(Collection<?> c);
50:
51: int size();
52:
53: Object[] toArray();
54:
55: <T> T[] toArray(T[] a);
56: }
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