Error: Could not find or load main class
<p>I'm new to Java programming and doing this as a project for school.  Here's the code I've written</p>

<pre><code>public static void main(String args[])
import javax.swing.*;
import java.awt.event.*;
public class SleepCounter extends JFrame {
  private JPanel panel;
  private JLabel messageLabel;
  private JTextField sleepTextField;
  private JTextField sleepAnswerField;
  private final int WINDOW_WIDTH = 310;
  private final int WINDOW_HEIGHT = 100;
  public SleepCounter() {
    setTitle("Sleep Counter");
    setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    buildPanel();
    add(panel);
    setVisible(true);
  }
  private void buildPanel() {
    dailyLabel = new JLabel("Enter Sleep " + "in hours");
    hourTextField = new JTextField(10);
    CalcButton = new JButton("Calculate");
    CalcButton.addActionListener(new CalcButtonListener());
    panel = new JPanel();
    panel.add(dailyLabel);
    panel.add(sleepTextField);
    panel.add(CalcButton);
    panel.add(sleepAnswerField);
  }
  private class CalcButtonListener implements ActionListener {
    public void actionPerformer(ActionEvent e) {
      String input;
      int total;
      input = sleepTextField.getText();
      for (int i = 0; i &lt; 7; i++); {
        input += total;
      }
      JOptionPane.showMessageDialog(null, "The total amount of sleep for " + (i + 1) + "days is" + total);
      if (int i &gt; 7) {
        double avg = (total / 7);
        JOptionPane.showMessageDialog(null, "The avg amount of sleep for 7 days is" + avg);
      }
    }
  }
}
</code></pre>

<p>When running I get an error message saying:</p>

<pre><code>Error: Could not find or laod main class Graduation Project.
</code></pre>

<p>I've done a search of this site and checked the answers as much as I know how.  I would appreciate any help that you offer.  </p>
