com.generallycloud.baseio.common.CollectionUtil Maven / Gradle / Ivy

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/*
 * Copyright 2015-2017 GenerallyCloud.com
 *  
 * 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.
 */
package com.generallycloud.baseio.common;

import java.util.Collection;
import java.util.Map;

public class CollectionUtil {

    public static boolean isEmpty(Collection collection) {
        return collection == null || collection.size() == 0;
    }

    public static boolean isEmpty(Object[] array) {
        return array == null || array.length == 0;
    }

    public static boolean isEmpty(Map map) {
        return map == null || map.size() == 0;
    }

    public static void printArray(Object[] array) {
        for (int i = 0; i < array.length; i++) {
            System.out.print(array[i]);
            System.out.print(",");
        }
        System.out.println();
    }

    public static void printArray(int[] array) {
        for (int i = 0; i < array.length; i++) {
            System.out.print(array[i]);
            System.out.print(",");
        }
        System.out.println();
    }

}