title: Exception in thread "main" java.lang.ClassCastException: hello cannot be cast to java.awt.event.ActionListener
body: <p>it seems as though i have found a new problem in my code. my code has no (visible) errors, but i still get no frame. Please help</p>
  
  <pre><code>import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.GridLayout;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.WindowEvent;
  import javax.swing.DefaultComboBoxModel;
  import javax.swing.JButton;
  import javax.swing.JComboBox;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  public class hello{
  //Int's and things
  static JButton Play = new JButton("&lt;PLAY&gt;");
  static JFrame pane = new JFrame("CIrCUT 0.0.2");
  static JLabel Title = new JLabel("CIrCUT");
  static JLabel none = new JLabel(" ");
  static JPanel panel = new JPanel(new GridLayout(10,10,10,10));
  static JButton Options = new JButton("&lt;OPTIONS&gt;");
  static JPanel panel2 = new JPanel(new GridLayout(10,10,10,10));
  static String b[]  = new String[3];
  static int panelLoct =1;
  JComboBox optionlist = new JComboBox();
  
  
      void initialize(){
      b[0] = "High";
      b[1] = "Medium";
      b[2] = "Low";
  
      //title
      pane.setTitle("CIrCUT 0.0.2");
      //drop down
  
      optionlist .setModel(new DefaultComboBoxModel(new String[] {"Option", "High", "Medium",  "Low"}));
      optionlist.setSelectedIndex(3);
      optionlist.addActionListener((ActionListener) this);
      //other pane-related things
      if(panelLoct==1){
      pane.setLayout(new GridLayout(10,10));
      panel.setMaximumSize(new Dimension(500,500));
      pane.setSize(500,500);
      pane.setMaximumSize(new Dimension(500,500));
      panel.add(Title);
      panel.add(none);
      panel.add(Play);
      panel.add(Options);
      panel2.add(optionlist);
      Play.setSize(new Dimension(500,450));
      pane.setLocation(500,50);
      pane.setBackground(Color.lightGray);
      pane.setContentPane(panel);
      pane.pack();
      pane.setMinimumSize(new Dimension(500,500));
      pane.setContentPane(panel);
      OptionButtonHandler cbHandler = new OptionButtonHandler();
      Options.addActionListener(cbHandler);
      pane.setVisible(true);
      }
  }
      public void windowClosing(WindowEvent e)
      {
      System.exit(0);
      }
       private static class OptionButtonHandler implements ActionListener
  
           {
               public void actionPerformed(ActionEvent e){
                   pane.remove(panel);
                   pane.add(panel2);
               }
           }
       public void actionPerformed(ActionEvent e) {
              JComboBox cb = (JComboBox)e.getSource();
              cb.getSelectedItem();
       }
  
  public static void main(String args[])
  {
      hello a = new hello();
      a.initialize();
  }
  }
  </code></pre>
  
  <p>any help at all would be much appreciated. here is the error i get when i try to run it</p>
  
  <pre><code>Exception in thread "main" java.lang.ClassCastException: hello cannot be cast to java.awt.event.ActionListener
      at hello.initialize(hello.java:39)
      at hello.main(hello.java:83)
  </code></pre>
  
  <p>It is probably a novice mistake, but could find nothing on how to solve it.</p>