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POClass extending KeyListener not responding to key presses
 

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    <p>Sorry about its being a duplicate - I was in a hurry when I wrote this, and didn't have time to check. Though I suppose it would have been faster, now that I think about it...</p> <hr> <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/286727/java-keylistener-for-jframe-is-being-unresponsive">Java KeyListener for JFrame is being unresponsive?</a> </p> </blockquote> <p>I have been writing an app and am trying to make hotkeys. I decided to use <code>KeyListener</code>, as it is all I know as of yet. However, the class is not responding to key presses. How would I fix this bug? If there is an alternative to <code>KeyListener</code> that will do the same thing, please let me know and preferably provide an example of how it would work.</p> <h3>Main class</h3> <pre><code>import java.awt.BorderLayout; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.*; import panels.TabBar; public class __mn implements KeyListener { static JFrame disp = new JFrame("dat app"); static TabBar tabs = new TabBar(); public static void main(String[] args) { disp.setLayout(new BorderLayout()); disp.add(tabs, BorderLayout.PAGE_START); disp.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); disp.setSize(TabBar.PREF_WIDTH, 500); disp.setResizable(false); disp.setLocationRelativeTo(null); disp.addKeyListener(new __mn()); disp.setVisible(true); } @Override public void keyPressed(KeyEvent e) { System.out.println(e.paramString()); } //Unused @Override public void keyReleased(KeyEvent e) { System.out.println(e.paramString()); } @Override public void keyTyped(KeyEvent e) { System.out.println(e.paramString()); } } </code></pre> <h3>TabBar class</h3> <pre><code>package panels; import java.awt.Color; import java.awt.FlowLayout; import java.awt.LayoutManager; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JPanel; //http://www.dreamincode.net/forums/topic/245148-java-key-binding-tutorial-and-demo-program/ public class TabBar extends JPanel implements ActionListener { private static final long serialVersionUID = 1L; public static final int NONE = -1; public static final int INBOX = 0; public static final int SEND_MSG = 1; public static final int PRIVATE_CHAT = 2; public static final int FEEDBACK = 3; public static final int PREF_WIDTH = 425; private static final String[] tabNames = {"Inbox", "Send a message", "Private chat", "Feedback"}; private static final JButton btnInbox = new JButton(tabNames[INBOX]); private static final JButton btnSendMSG = new JButton(tabNames[SEND_MSG]); private static final JButton btnPrivChat = new JButton(tabNames[PRIVATE_CHAT]); private static final JButton btnFeedback = new JButton(tabNames[FEEDBACK]); public int currentTab = -1; public TabBar() { this(new FlowLayout()); } public TabBar(LayoutManager layout) { super(layout); add(btnInbox); add(btnSendMSG); add(btnPrivChat); add(btnFeedback); btnInbox.addActionListener(this); btnSendMSG.addActionListener(this); btnPrivChat.addActionListener(this); btnFeedback.addActionListener(this); setBackground(Color.BLACK); } @Override public void actionPerformed(ActionEvent e) { System.out.println(e.paramString()); if (e.getSource() == btnInbox) currentTab = INBOX; else if (e.getSource() == btnSendMSG) currentTab = SEND_MSG; else if (e.getSource() == btnPrivChat) currentTab = PRIVATE_CHAT; else if (e.getSource() == btnFeedback) currentTab = FEEDBACK; else currentTab = NONE; } public void hotkeyPressed(char pressed) { pressed = Character.toLowerCase(pressed); System.out.println("Hotkey pressed: " + pressed); switch (pressed) { case 'i': setTab(INBOX); break; case 's': setTab(SEND_MSG); break; case 'p': setTab(PRIVATE_CHAT); break; case 'f': setTab(FEEDBACK); break; default: break; } } private void setTab(int tab) { System.out.println("Somthing pressed! tab=" + tab); currentTab = tab; switch (tab) { case INBOX: btnInbox.requestFocusInWindow(); } } } </code></pre>
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    1. CO"Feel free to edit code out if you feel it is unnecessary." - *you* should do this.
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    2. CODo you see any error in the console ? Where exactly is the `hotkeyPressed` method called ? Which keys are you trying to test?
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    3. COQuick answer, to be sure.. Thanks, everyone.
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