Java Collection Null getSizeNullSafe(final Collection collection)

Description

Return the collection's size, or 0 if it is null

License

Apache License

Parameter

Parameter	Description
collection	collection of elements

Return

collection's size, or 0 if it is null

Declaration

public static int getSizeNullSafe(final Collection<?> collection) 

Method Source Code

//package com.java2s;
/**/* w  w w.j a v a  2s.  c o m*/
 * Copyright (C) [2013] [The FURTHeR Project]
 *
 * 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.Collection;

public class Main {
    /**
     * Return the collection's size, or 0 if it is <code>null</code>
     *
     * @param collection
     *            collection of elements
     * @return collection's size, or 0 if it is <code>null</code>
     */
    public static int getSizeNullSafe(final Collection<?> collection) {
        return (collection == null) ? 0 : collection.size();
    }
}

Related

1. countNotNull(Collection collection)
2. getItemAtPositionOrNull(Collection collection, int position)
3. getNextNullIndex(C collection)
4. getNumberOfNonNullElements(final Collection col)
5. getSingleElementOrNull(Collection collection)
6. hasAtLeastOneNotNullElement(Collection collection)
7. hasCollectionNullItem(Collection collection)
8. isAllNull(Collection values)
9. isEmplyOrNull(Collection collection)