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1   ////////////////////////////////////////////////////////////////////////////////
2   // checkstyle: Checks Java source code for adherence to a set of rules.
3   // Copyright (C) 2001-2018 the original author or authors.
4   //
5   // This library is free software; you can redistribute it and/or
6   // modify it under the terms of the GNU Lesser General Public
7   // License as published by the Free Software Foundation; either
8   // version 2.1 of the License, or (at your option) any later version.
9   //
10  // This library is distributed in the hope that it will be useful,
11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  // Lesser General Public License for more details.
14  //
15  // You should have received a copy of the GNU Lesser General Public
16  // License along with this library; if not, write to the Free Software
17  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  ////////////////////////////////////////////////////////////////////////////////
19  
20  package com.puppycrawl.tools.checkstyle.gui;
21  
22  import java.io.File;
23  
24  import javax.swing.SwingUtilities;
25  import javax.swing.WindowConstants;
26  
27  /**
28   * Entry point for starting the checkstyle GUI.
29   *
30   */
31  public final class Main {
32  
33      /** Hidden constructor of the current utility class. */
34      private Main() {
35          // no code
36      }
37  
38      /**
39       * Entry point.
40       * @param args the command line arguments.
41       */
42      public static void main(final String... args) {
43          SwingUtilities.invokeLater(() -> {
44              final MainFrame mainFrame = new MainFrame();
45  
46              if (args.length > 0) {
47                  final File sourceFile = new File(args[0]);
48                  mainFrame.openFile(sourceFile);
49              }
50              mainFrame.setTitle("Checkstyle GUI");
51              mainFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
52              mainFrame.setVisible(true);
53          });
54      }
55  
56  }