Java tutorial
//package com.java2s; import java.util.Collection; import java.util.Map; public class Main { public static <T> boolean isEmpty(Collection<T> collection) { return null == collection || collection.size() <= 0; } public static boolean isEmpty(Map<Object, Object> map) { return null == map || map.isEmpty(); } public static boolean isEmpty(Object[] objects) { return null == objects || objects.length <= 0; } }