Made new JFrame Class, not running though

[beastman3226]

I made a new JFrame class and I have added all functionality to it but when I run it says "No main class found". When ever I run the class individually I get a stack trace like this:

java.lang.NoClassDefFoundError: me/GUI/NewMain
Caused by: java.lang.ClassNotFoundException: me.GUI.NewMain
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: me.GUI.NewMain.  Program will exit.
Exception in thread "main" Java Result: 1

I know this means I have no main class but it's there since I'm editing it. Samething with the actual JFrame class.

Here's the JFrame class:

package me.GUI;

/**
 *
 * @author beastman3226
 */
public class AreaJFrame extends javax.swing.JFrame {
    
    /**
     * Creates new form AreaJFrame
     */
    public AreaJFrame() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        Length = new javax.swing.JTextField();
        Width = new javax.swing.JTextField();
        Multiply = new javax.swing.JButton();
        Area = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Area Finder\n");

        Length.setText("Length");

        Width.setText("Width");

        Multiply.setText("Find");
        Multiply.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                MultiplyActionPerformed(evt);
            }
        });

        Area.setText("Area");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(Length, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(Multiply, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(Width, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addGap(136, 136, 136)
                .addComponent(Area, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(Length, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(Width, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(Multiply))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(Area))
        );

        pack();
    }// </editor-fold>

    private void MultiplyActionPerformed(java.awt.event.ActionEvent evt) {
        int length = (int) (Double.parseDouble(Length.getText()));
        int width = (int) (Double.parseDouble(Width.getText()));
        int area = length * width;
        Area.setText(area + "< -- Area");
    }
    
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new AreaJFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify
    private javax.swing.JLabel Area;
    private javax.swing.JTextField Length;
    private javax.swing.JButton Multiply;
    private javax.swing.JTextField Width;
    // End of variables declaration
}

All in NetBeans by the way, I figured I missed something in the NetBeans instruction manual:P

[wsaryada]

It said that it cannot fine the NewMain (me.GUI.NewMain) class. Do you have it?

[DarrylBurke]

I made a new JFrame class and I have added all functionality to it but when I run it says "No main class found". ,,, I figured I missed something in the NetBeans instruction manual:P

Search the NetBeans help to find how to set the main class (hint: Project -> Properties -> Run

db

[beastman3226]

It said that it cannot fine the NewMain (me.GUI.NewMain) class. Do you have it?

I deleted it and restarted Netbeans, now at my class declaration line it says "Duplicate class: me.GUI.AreaJFrame". Whenever I quick fix It makes me create a new class.