Java tutorial
//package com.java2s; //License from project: Apache License import java.util.Collection; import java.util.Map; public class Main { public static <T> boolean isEmpty(final T[] arr) { return arr == null || arr.length == 0; } public static <T> boolean isEmpty(final Collection<T> collection) { return collection == null || collection.isEmpty(); } public static <T, S> boolean isEmpty(final Map<T, S> map) { return map == null || map.isEmpty(); } }