se creo un jframe (si fa così di solito no??)..
il codice che mi produce è questo:
codice:
package vePack;

import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.Dimension;

public class MainVE {

	private JFrame jFrame = null;  //  @jve:decl-index=0:visual-constraint="101,22"
	private JPanel jContentPane = null;

	public MainVE() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * This method initializes jFrame	
	 * 	
	 * @return javax.swing.JFrame	
	 */
	private JFrame getJFrame() {
		if (jFrame == null) {
			jFrame = new JFrame();
			jFrame.setSize(new Dimension(360, 139));
			jFrame.setVisible(true);
			jFrame.setContentPane(getJContentPane());
		}
		return jFrame;
	}

	/**
	 * This method initializes jContentPane	
	 * 	
	 * @return javax.swing.JPanel	
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jContentPane = new JPanel();
			jContentPane.setLayout(new BorderLayout());
		}
		return jContentPane;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}
e ovviamente nn va nulla