Java tutorial
/* * Copyright (c) 2017 Pawe Cholewa * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the * Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE * OR OTHER DEALINGS IN THE SOFTWARE. */ package pl.mcpg.nbtjeditor; import java.io.File; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.DefaultParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import org.apache.commons.cli.ParseException; import static pl.mcpg.nbtjeditor.gui.Dialogs.displayError; import pl.mcpg.nbtjeditor.gui.MainController; public class Start extends Application { public static final String APP_TITLE/*prefix*/ = "NBT JEditor"; private static File fileToOpen; @Override public void start(Stage stage) { Parent parent = null; FXMLLoader loader = new FXMLLoader(); try { parent = loader.load(getClass().getResourceAsStream("/main.fxml")); } catch (Exception e) { displayError("Couldn't load main FXML file! Application will\nnow close.", e); e.printStackTrace(); System.exit(1); } stage.setMinWidth(150); stage.setMinHeight(150); stage.setTitle(APP_TITLE); stage.setScene(new Scene(parent, 640, 480)); ((MainController) loader.getController()).setStage(stage); stage.show(); if (fileToOpen != null && fileToOpen.exists()) { ((MainController) loader.getController()).open(null); } } public static void main(String[] args) { // if there are any arguments, parse them if (args.length > 0) { Options options = new Options(); Option help = new Option("h", "help", false, "Displays this help message"); Option openfile = new Option("f", "file", true, "Opens requested file at startup"); openfile.setArgName("filename"); openfile.setType(String.class); options.addOption(openfile); options.addOption(help); options.addOption(openfile); CommandLineParser parser = new DefaultParser(); CommandLine commandLine = null; try { commandLine = parser.parse(options, args); } catch (ParseException e) { displayError("Couldn't parse command line arguments!", e); } if (commandLine != null) { // display help message if (commandLine.hasOption("h")) { HelpFormatter helpFormatter = new HelpFormatter(); helpFormatter.printHelp("nbt-jeditor", "\nCommand line arguments for NBT JEditor", options, "\nIssues? Report them at GitHub: https://github.com/Mcpg/nbt-jeditor/issues", true); System.exit(0); } if (commandLine.hasOption("f")) { // find the file and if it doesn't exist display message and set it to null String value = commandLine.getOptionValue("f"); if (value != null && !value.isEmpty()) { fileToOpen = new File(value); if (!fileToOpen.exists()) { displayError("Requested file '" + value + "' doesn't exist."); fileToOpen = null; } } } } } launch(args); } }