001    /*
002     * Created on Nov 1, 2007
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
005     * the License. You may obtain a copy of the License at
006     *
007     * http://www.apache.org/licenses/LICENSE-2.0
008     *
009     * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
010     * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
011     * specific language governing permissions and limitations under the License.
012     *
013     * Copyright @2007-2011 the original author or authors.
014     */
015    package org.fest.util;
016    
017    import java.util.*;
018    
019    /**
020     * Filter for elements in a collection.
021     * @param <T> the generic type of the elements to return by the filter.
022     *
023     * @author Yvonne Wang
024     */
025    public interface CollectionFilter<T> {
026    
027      /**
028       * Filters a given collection.
029       * @param target the collection to filter.
030       * @return a list containing the filtered elements.
031       */
032      List<T> filter(Collection<?> target);
033    }