Here you can find the source of getRandomElementFromList(List
public static <T> T getRandomElementFromList(List<T> l)
//package com.java2s; /**/*from w ww . ja va2s .com*/ * The contents of this file are subject to the OpenMRS Public License * Version 1.0 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://license.openmrs.org * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * Copyright (C) OpenMRS, LLC. All Rights Reserved. */ import java.util.List; public class Main { public static <T> T getRandomElementFromList(List<T> l) { return l.get((int) (Math.random() * l.size())); } }