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 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 * distributed under the License is distributed on an "AS IS" BASIS,
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This package contains implementations of the Set, SortedSet and NavigableSet interfaces.

The implementations are in the form of direct implementations and decorators. A decorator wraps another implementation of the interface to add some specific additional functionality.

The following implementations are provided in the package:

  • CompositeSet - a set that combines multiple sets into one
The following decorators are provided in the package:
  • Unmodifiable - ensures the collection cannot be altered
  • Predicated - ensures that only elements that are valid according to a predicate can be added
  • Transformed - transforms each element added
  • ListOrdered - ensures that insertion order is retained
  • MapBackedSet - a set formed by decorating a Map
/** * This package contains implementations of the {@link java.util.Set Set}, * {@link java.util.SortedSet SortedSet} and * {@link java.util.NavigableSet NavigableSet} interfaces. * <p> * The implementations are in the form of direct implementations and decorators. * A decorator wraps another implementation of the interface to add some * specific additional functionality. * <p> * The following implementations are provided in the package: * <ul> * <li>CompositeSet - a set that combines multiple sets into one * </ul> * The following decorators are provided in the package: * <ul> * <li>Unmodifiable - ensures the collection cannot be altered * <li>Predicated - ensures that only elements that are valid according to a predicate can be added * <li>Transformed - transforms each element added * <li>ListOrdered - ensures that insertion order is retained * <li>MapBackedSet - a set formed by decorating a Map * </ul> * */
package org.apache.commons.collections4.set;