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There is a newer version: 1.5.0

package cn.hippo4j.common.toolkit;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * Collection util.
 *
 * @author chen.ma
 * @date 2021/12/22 20:43
 */
public class CollectionUtil {

    /**
     * Get first.
     *
     * @param iterable
     * @param 
     * @return
     */
    public static  T getFirst(Iterable iterable) {
        Iterator iterator;
        if (iterable != null && (iterator = iterable.iterator()) != null && iterator.hasNext()) {
            return iterator.next();
        }

        return null;
    }

    /**
     * Is empty.
     *
     * @param list
     * @return
     */
    public static boolean isEmpty(List list) {
        return list == null || list.isEmpty();
    }

    /**
     * Is not empty.
     *
     * @param list
     * @return
     */
    public static boolean isNotEmpty(List list) {
        return !isEmpty(list);
    }


    /**
     * Is empty.
     *
     * @param map
     * @return
     */
    public static boolean isEmpty(Map map) {
        return map == null || map.isEmpty();
    }

    /**
     * Is not empty.
     *
     * @param map
     * @return
     */
    public static boolean isNotEmpty(Map map) {
        return !isEmpty(map);
    }

}