Android Collection Element Get getFirst(Collection collection)

Description

get First

License

Apache License

Declaration

public static <T> T getFirst(Collection<T> collection) 

Method Source Code

//package com.java2s;
/*/*from  ww w.j  ava  2s .c  o m*/
 * (C) Copyright Itude Mobile B.V., The Netherlands
 * 
 * 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 {
    public static <T> T getFirst(Collection<T> collection) {
        if (collection.isEmpty())
            return null;
        else
            return collection.iterator().next();
    }

    /**
     * Null-safe check if the specified collection is empty.
     *  
     * @param coll the collection to check, may be null
     * @return true if empty or null
     */
    public static boolean isEmpty(Collection<?> coll) {
        return (coll == null || coll.isEmpty());
    }
}

Related

1. findCommonElementType(Collection collection)
2. getLastIndex(final Collection collection)