Here you can find the source of isEmpty(final List> aList)
public static boolean isEmpty(final List<?> aList)
//package com.java2s; //License from project: Apache License import java.util.List; public class Main { public static boolean isEmpty(final List<?> aList) { return !(isNotEmpty(aList)); }//from www . j av a 2 s.c om public static boolean isNotEmpty(final List<?> aList) { if (null != aList) { if (!aList.isEmpty()) { return true; } } return false; } }