Java tutorial
//package com.java2s; import java.util.Collection; import java.util.Map; public class Main { public static boolean isNotEmpty(Collection<?> collection) { return !isEmpty(collection); } public static boolean isNotEmpty(Map<?, ?> map) { if (map != null && !map.isEmpty() && map.size() > 0) { return true; } else { return false; } } public static boolean isEmpty(Collection<?> collection) { if (collection == null || collection.isEmpty()) { return true; } else { return false; } } public static boolean isEmpty(Map<?, ?> map) { return !isNotEmpty(map); } }