Java Collection Empty isNotEmpty(Collection source)

Description

Checks if collection is not null nor empty

License

Apache License

Parameter

Parameter	Description
source	collection to check

Return

true if collection is not null nor empty

Declaration

public static boolean isNotEmpty(Collection<?> source) 

Method Source Code

//package com.java2s;
/**/*from   w  ww  .j  a  v  a  2 s  .c  o  m*/
 *    Copyright 2013 MegaFon
 *
 *    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;
import java.util.Map;

public class Main {
    /**
     * Checks if collection is not null nor empty
     *
     * @param source collection to check
     * @return true if collection is not null nor empty
     */
    public static boolean isNotEmpty(Collection<?> source) {
        return !isEmpty(source);
    }

    /**
     * Checks if map is not null or empty
     *
     * @param source map to check
     * @return true if map is not null nor empty
     */
    public static boolean isNotEmpty(Map source) {
        return !isEmpty(source);
    }

    /**
     * Checks if collection is null or empty
     *
     * @param source collection to check
     * @return true if collection is null or empty
     */
    public static boolean isEmpty(Collection<?> source) {
        return source == null || source.size() == 0;
    }

    /**
     * Checks if map is null or empty
     *
     * @param source map to check
     * @return true if map is null or empty
     */
    private static boolean isEmpty(Map source) {
        return source == null || source.isEmpty();
    }
}

Related

1. isNotEmpty(Collection collection)
2. isNotEmpty(Collection collection)
3. isNotEmpty(Collection collection)
4. isNotEmpty(Collection collection)
5. isNotEmpty(Collection collection)
6. isNotEmpty(Collection values)
7. isNotEmpty(Collection... colls)
8. isNotEmpty(Collection collection)
9. isNotEmpty(Collection collection)