Here you can find the source of isHelp(List
static boolean isHelp(List<String> args, boolean valOnEmpty)
//package com.java2s; /*//w w w . j av a 2 s. c o m * Copyright 2016 OICR * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://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 { static boolean isHelp(List<String> args, boolean valOnEmpty) { if (args.isEmpty()) { return valOnEmpty; } String first = args.get(0); return isHelpRequest(first); } static boolean isHelpRequest(String first) { return "-h".equals(first) || "--help".equals(first); } }