Impression JFrame (java)

Bonjour,
Debutant en JAVA et après avoir consulté des dizaines de pages sur l'impression dans ce language je n'ai toujours pas compris comment effectuer l'impression de ma JFrame car il n'y a AUCUNE véritable explication dans ses pseudo "tutoriels", je m'en remet donc a vous :)

Je voudrais pouvoir imprimer cette JFrame (ou plutot ce qu'elle contient) au lancement du programme donc sans bouton n'y quoi que ce soit histoire que je comprenne comment sa marche, merci d'avance.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;



public class NewClass extends JFrame {

    private JLabel lkPrenom;
    private JLabel lkNom;
    private JLabel lkProfession;
    private JLabel lkAdr;
    private JLabel lkCP;
    private JLabel lkVille;
    private JLabel lkTel;
    private JLabel lkNumk;
    private JLabel lPatient;
    private JLabel lMedecin;
    private JLabel lDDP;
    private JLabel lNDSE;
    private JLabel lDM;
    private JTextField tfPatient;
    private JTextField tfMedecin;
    private JTextField tfDDP;
    private JTextField tfNDSE;
    private JTextArea taDM;




    public NewClass(String nomFenetre){
        super(nomFenetre);
        this.setBounds(30, 30, 700, 1000);
        this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        //Label
        lkNom = new JLabel("nom");
        lkPrenom = new JLabel("prenom");
        lkProfession = new JLabel("proffesion");
        lkAdr = new JLabel("adresse");
        lkCP = new JLabel("CP");
        lkVille = new JLabel("Ville");
        lkTel = new JLabel("08 25 25 25 25");
        lkNumk = new JLabel("25 022254 7");
        lPatient = new JLabel("PATIENT : ");
        lMedecin = new JLabel("MEDECIN : ");
        lDDP = new JLabel("Date de prescription : ");
        lNDSE = new JLabel("Nombre de séance effectuées : ");
        lDM = new JLabel("Diagnostic médical : ");
        //TextField
        tfPatient = new JTextField(15);
        tfMedecin = new JTextField(15);
        tfDDP = new JTextField(5);
        tfNDSE = new JTextField(5);
        //TextArea
        taDM = new JTextArea(4,63);
        this.fenetrePrincipale();
        this.setResizable(false);
        this.setVisible(true);
    }

    private void fenetrePrincipale(){

        Container c = getContentPane();

        //Panel Prenom et nom
        JPanel pPrenomNom = new JPanel();
        pPrenomNom.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pPrenomNom.add(lkPrenom);
        pPrenomNom.add(lkNom);
        //Panel Proffession
        JPanel pProfession = new JPanel();
        pProfession.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pProfession.add(lkProfession);
        //Panel Adresse
        JPanel pAdr = new JPanel();
        pAdr.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pAdr.add(lkAdr);
        //Panel CP et Ville
        JPanel pCPVille = new JPanel();
        pCPVille.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pCPVille.add(lkCP);
        pCPVille.add(lkVille);
        //Panel Tel
        JPanel pTel = new JPanel();
        pTel.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pTel.add(lkTel);
        //Panel NumK
        JPanel pNumK = new JPanel();
        pNumK.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pNumK.add(lkNumk);
        //Panel GridLayout for Entete Evelyne(pE1)
        JPanel pE1 = new JPanel();
        pE1.setLayout(new GridLayout(6,1));
        pE1.add(pPrenomNom);
        pE1.add(pProfession);
        pE1.add(pAdr);
        pE1.add(pCPVille);
        pE1.add(pTel);
        pE1.add(pNumK);
        //
        //Panel Patient
        JPanel pPatient = new JPanel();
        pPatient.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pPatient.add(lPatient);
        pPatient.add(tfPatient);
        //Panel Medecin
        JPanel pMedecin = new JPanel();
        pMedecin.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pMedecin.add(lMedecin);
        pMedecin.add(tfMedecin);
        //Panel GridLayout for Patient et Medecin(pE2)
        JPanel pE2 = new JPanel();
        pE2.setLayout(new GridLayout(2,1));
        pE2.add(pPatient);
        pE2.add(pMedecin);
        //
        //Panel Contenant pE1 et pE2
        JPanel pPE1PE2 = new JPanel();
        pPE1PE2.setLayout(new GridLayout(1,2,110,50));
        pPE1PE2.add(pE1);
        pPE1PE2.add(pE2);
        //
        //
        //Panel DDP
        JPanel pDDP = new JPanel();
        pDDP.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pDDP.add(lDDP);
        pDDP.add(tfDDP);
        //Panel NDSE
        JPanel pNDSE = new JPanel();
        pNDSE.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pNDSE.add(lNDSE);
        pNDSE.add(tfNDSE);
        //
        //Panel GridLayout contenant pDDP et pNDSE(E3)
        JPanel pE3 = new JPanel();
        pE3.setLayout(new GridLayout(1,2,100,50));
        pE3.add(pDDP);
        pE3.add(pNDSE);
        //
        //
        //Panels pour Diagnostic medical pDM1 et pDM2
        JPanel pDM1 = new JPanel();
        pDM1.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pDM1.add(lDM);
        JPanel pDM2 = new JPanel();
        pDM2.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        pDM2.add(taDM);
        //
        //Panel BorderLayout pDM contenant pDM1 et pDM2
        JPanel pDM = new JPanel();
        pDM.setLayout(new BorderLayout());
        pDM.add(pDM1,BorderLayout.NORTH);
        pDM.add(pDM2,BorderLayout.CENTER);
        //
        //
        //Panel Borderlayout Contenant ALLN  :
        JPanel ALLN = new JPanel();
        ALLN.setLayout(new BorderLayout(0,10));
        ALLN.add(pPE1PE2,BorderLayout.NORTH);
        ALLN.add(pE3,BorderLayout.CENTER);
        ALLN.add(pDM,BorderLayout.SOUTH);
        //
        //
        //


        // Panel contenant TT :
        JPanel ALL = new JPanel();
        ALL.setLayout(new BorderLayout());
        ALL.add(ALLN,BorderLayout.NORTH);

        c.add(ALL);
        c.setVisible(true);


    }




    public static void main(String[] args){

        NewClass e = new NewClass("uneFenetre");






    }
}