Hola a todos!
Estoy tratando de subir archivos desde un JApplet, pero no me sale, se supone que deberia ser sencillo, pero llevo dias intentandolo, sin exito, y quisiera saber si alguno de ustedes me puden dar la solución, aqui les dejo mi codigo para que chequen

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/*
 * app.java
 *
 * Created on 19/06/2011, 12:54:05 AM
 */
 
package test;
 
import java.io.File;
import javax.swing.JFileChooser;
 
/**
 *
 * @author pirataX
 */
public class app extends javax.swing.JApplet {
 
    /** Initializes the applet app */
    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    initComponents();
			choose();
                }
	});
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
 
    /** This method is called from within the init() method 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() {
 
        jFileChooser1 = new javax.swing.JFileChooser();
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jFileChooser1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jFileChooser1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(22, Short.MAX_VALUE))
        );
    }// </editor-fold>
    public void choose(){
        String archivo="";
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setMultiSelectionEnabled(true);
	int retVal = fileChooser.showOpenDialog(this);
	if (retVal == fileChooser.APPROVE_OPTION){
            File[] files = fileChooser.getSelectedFiles();
            for (int i=0; i<files.length; i++) {
                System.out.println(files[i].getName());
            }
	}
    }
    // Variables declaration - do not modify
    private javax.swing.JFileChooser jFileChooser1;
    // End of variables declaration
 
}
 
Espero sus ayudas!