Here you can find the source of getMaxValue(List
public static double getMaxValue(List<Double> values)
//package com.java2s; /*/*from w ww. j ava 2s. c o m*/ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * Copyright (C) 2015 George Antony Papadakis (gpapadis@yahoo.gr) */ import java.util.List; public class Main { public static double getMaxValue(List<Double> values) { if (values.isEmpty()) { return -1.0; } double max = -1.0; for (Double value : values) { if (max < value) { max = value; } } return max; } }