Java Collection Remove remove(Collection collection, final int count)

Description

Removes the specified number of elements from the collection, returns them as a list.

License

Open Source License

Parameter

Parameter	Description
collection	a parameter
count	a parameter

Exception

Parameter	Description
Exception	an exception

Declaration

public static <T> List<T> remove(Collection<T> collection, final int count) throws Exception 

Method Source Code

//package com.java2s;
/*//from  w  ww  . j  av a2 s.c om
 * Copyright (c) 2015 Christopher Ritchie
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to 
 * deal in the Software without restriction, including without limitation the 
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 
 * sell copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 */

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

public class Main {
    /**
     * Removes the specified number of elements from the collection, returns
     * them as a list.
     * @param collection
     * @param count
     * @return
     * @throws Exception
     */
    public static <T> List<T> remove(Collection<T> collection, final int count) throws Exception {
        List<T> list = new ArrayList<T>();

        while (list.size() < count && collection.size() > 0) {
            T value = collection.iterator().next();
            list.add(value);
            collection.remove(value);
        }
        return list;
    }
}

Related

1. minus(Collection primaryCollection, Collection toBeRemovedCollection, Collection target)
2. remove(Collection c, Object o)
3. remove(Collection collection, Object object)
4. remove(Collection p_collection, int p_index, int p_numberOfObjects)
5. remove(Collection col, T value)
6. remove(Collection collection, T... items)
7. remove(final Collection c, final Object elem)
8. remove(final int index, final Collection collection)
9. removeAll(Collection collection, Collection remove)