Java List Size sizeSafe(List list)

Description

Returns the size of a list and 0 if the list is null.

License

Apache License

Parameter

Parameter	Description
list	the list to return the size for

Return

the list size

Declaration

private static int sizeSafe(List<?> list) 

Method Source Code

//package com.java2s;
/*//from   www. j a  v  a  2 s .  co m
 * Copyright 2009-2015 University of Hildesheim, Software Systems Engineering
 *
 * 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;

public class Main {
    /**
     * Returns the size of a list and 0 if the list is <b>null</b>.
     * 
     * @param list the list to return the size for
     * @return the list size
     */
    private static int sizeSafe(List<?> list) {
        return null == list ? 0 : list.size();
    }
}

Related

1. size(Object[] list)
2. sizeNotNull(final List list)
3. sizeOf(List l)
4. sizeOfListMap(Map> map)
5. sizeOfStringToStringListMap( Map> m)