Java Collection to List toList(Collection collection)

Description

Converts the given collection to a java.util.List.

License

Apache License

Parameter

Parameter	Description
collection	The collection to convert to a list.

Return

A java.util.List containing all of the elements from the supplied collection.

Declaration

public static List toList(Collection collection) 

Method Source Code

//package com.java2s;
/*//from   w ww  .ja va2  s .  com
 Copyright 2008 Jenkov Development

 Licensed 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.List;
import java.util.Collection;
import java.util.Iterator;
import java.util.ArrayList;

public class Main {
    /**
     * Converts the given collection to a <code>java.util.List</code>.
     * @param collection The collection to convert to a list.
     * @return A <code>java.util.List</code> containing all of the elements from the
     *         supplied collection.
     */
    public static List toList(Collection collection) {
        if (collection instanceof List)
            return (List) collection;

        List list = new ArrayList();
        Iterator iterator = collection.iterator();
        while (iterator.hasNext()) {
            list.add(iterator.next());
        }
        return list;
    }
}

Related

1. convertCollectionToSQL(List listId)
2. newList(final Collection elements)
3. newList(final Collection collection)
4. newList(final Collection objects)
5. toList(Collection addresses, char separator)
6. toList(Collection collection)
7. toList(Collection c)
8. toList(Collection collection)
9. toList(Collection lines)