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POHow to add swing components that are outside of main file?
 

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  1. POHow to add swing components that are outside of main file?
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    <p>Example of my problem:</p> <p>I have a main file:</p> <pre><code>public class APP extends JFrame { private Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); public APP() { setLayout(new BorderLayout()); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setJMenuBar(new MenuBar()); JPanel content = new JPanel(new GridLayout(0, 8, 2, 2)); add(new JScrollPane(content, 22, 32), BorderLayout.CENTER); pack(); setLocationByPlatform(true); setResizable(false); setVisible(true); } public Dimension getPreferredSize() { return new Dimension(screen.width / 10 * 7, screen.height / 10 * 6); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { APP program = new APP(); } }); } } </code></pre> <p>And I have an external object that I'm trying to add as a JMenuBar:</p> <pre><code>public class MenuBar extends JMenuBar { public MenuBar() { JMenu file = new JMenu("File"); file.setMnemonic(KeyEvent.VK_F); add(file); JMenuItem item; item = new JMenuItem("Add New"); item.setMnemonic(KeyEvent.VK_N); item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, ActionEvent.ALT_MASK)); item.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { //createThumb(); } }); file.add(item); } } </code></pre> <p>However, my menu bar doesn't show up at all. When I create a JMenuBar function inside the main file, such as... createMenuBar() and have the same exact code within it, it shows up when I add it to the frame, but when I have it as an external object, it doesn't.</p> <p>What am I doing wrong?</p> <p><strong>EDIT:</strong> Fixed the error. Refer to the code above.</p>
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    1. USmKorbel
    1. USB.K.
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    1. COAre you sure your not using java.swt.MenuBar?
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      1. POHow to add swing components that are outside of main file?
      1. USMadProgrammer
    2. COthe two classes are in the same directory?
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      1. POHow to add swing components that are outside of main file?
      1. UShtz
    3. CODaniel found the answer. I accidentally made it a method, instead of a constructor.
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      1. POHow to add swing components that are outside of main file?
      1. USB.K.
 

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