Java tutorial
//package com.java2s; import java.util.Collection; import java.util.Map; public class Main { public static boolean notNullOrEmpty(Collection<?> c) { return !isNullOrEmpty(c); } public static <K, V> boolean notNullOrEmpty(Map<K, V> map) { return !isNullOrEmpty(map); } public static boolean isNullOrEmpty(Collection<?> c) { return c == null || c.isEmpty(); } public static <K, V> boolean isNullOrEmpty(Map<K, V> map) { return map == null || map.isEmpty(); } }