Java Collection Flatten flatten(Collection> collOfLists)

Description

This method is NOT intended as a part of public API and should not be used outside the library!

License

Apache License

Parameter

Parameter	Description
collOfLists	a parameter

Declaration

public static <U> List<U> flatten(Collection<List<U>> collOfLists) 

Method Source Code

//package com.java2s;
/*/*from w  w w  .  jav  a 2 s  .  co m*/
 * 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.ArrayList;
import java.util.Collection;

import java.util.List;

public class Main {
    /**
     * This method is NOT intended as a part of public API and should not be used outside the library!
     * Flattens collection of lists of elements to one list of elements.
     * @param collOfLists
     * @return
     */
    public static <U> List<U> flatten(Collection<List<U>> collOfLists) {
        List<U> res = new ArrayList<U>();
        for (List<U> l : collOfLists) {
            res.addAll(l);
        }
        return res;
    }
}

Related

1. flatten(Collection> collections)
2. flatten(Collection> cols)
3. flatten(Collection l)
4. flatten(Collection list, Class type)
5. flatten(Collection> nestedList)
6. flatten(Collection collection, char separator)
7. flatten(Collection original)
8. flatten(final S targetCollection, final Collection> setOfSets)
9. flattenCollection(Collection col)