Here you can find the source of max(List
public static Number max(List<Number> numberList)
//package com.java2s; /*/*from ww w . ja v a2 s. c o m*/ * This software is licensed under the Apache License, Version 2.0 * (the "License") agreement; you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.List; public class Main { public static Number max(List<Number> numberList) { Number answer = null; double answerValue = Double.MIN_VALUE; for (Number number : numberList) { if (number.doubleValue() > answerValue) { answerValue = number.doubleValue(); answer = number; } } return answer; } }