Java Collection to List convertCollectionToList(Collection coll)

Description

Converts an instance of List to an instance of Collection.

License

Open Source License

Parameter

Parameter	Description
T	a parameter
coll	An input Collection

Return

The input value coll if it is an instance of List. Else it will construct a list with the same values and return it.

Declaration

public static <T> List<T> convertCollectionToList(Collection<T> coll) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

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

import java.util.List;

public class Main {
    /**//from w  w w  .  ja  v a  2  s  .com
     * Converts an instance of List to an instance of Collection.
     * @param <T>
     * @param coll An input Collection
     * @return The input value coll if it is an instance of List. Else it will construct a list with the same values and return it.
     **/
    public static <T> List<T> convertCollectionToList(Collection<T> coll) {
        if (coll instanceof List) {
            return (List<T>) coll;
        } else {
            List<T> theReturn = new ArrayList<T>(coll);
            return theReturn;
        }
    }
}

Related

1. collectionToList(Collection theset)
2. collectionToList(Collection source)
3. collectionToList(Iterable c)
4. convertCollectionToList(Collection c)
5. convertCollectionToList(Collection collection)
6. convertCollectionToList(final Collection collection)
7. convertCollectionToSQL(List listId)
8. newList(final Collection elements)