Java examples for java.util:Collection Search
returns true if the specified collection is null or empty
//package com.java2s; import java.util.Collection; import java.util.Map; public class Main { public static void main(String[] argv) { Collection collection = java.util.Arrays.asList("asdf", "java2s.com"); System.out.println(isEmpty(collection)); }// w ww . j av a 2 s . co m /** * This is a convenience method that returns true if the specified collection is null or empty * * @param <T> * Any type of object * @param collection * @return */ public static <T> boolean isEmpty(Collection<T> collection) { return collection == null || collection.isEmpty(); } /** * This is a convenience method that returns true if the specified map is null or empty * * @param <T> * any type of key * @param <U> * any type of value * @param map * @return */ public static <T, U> boolean isEmpty(Map<T, U> map) { return map == null || map.isEmpty(); } }