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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   * @author unknown
31   */
32  public final class Main {
33  
34      /** Hidden constructor of the current utility class. */
35      private Main() {
36          // no code
37      }
38  
39      /**
40       * Entry point.
41       * @param args the command line arguments.
42       */
43      public static void main(final String... args) {
44          SwingUtilities.invokeLater(() -> {
45              final MainFrame mainFrame = new MainFrame();
46  
47              if (args.length > 0) {
48                  final File sourceFile = new File(args[0]);
49                  mainFrame.openFile(sourceFile);
50              }
51              mainFrame.setTitle("Checkstyle GUI");
52              mainFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
53              mainFrame.setVisible(true);
54          });
55      }
56  
57  }