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private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {                                
        addCustomer cus = new addCustomer();
        jDesktopPane1.add(cus);
        cus.setVisible(true);
        
    }                                          

    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {                                    searchCustomer scus = new searchCustomer();
        jDesktopPane1.add(scus);
        scus.setVisible(true);
        
        
    }                                          

    private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {                                    addflight f = new addflight();
        jDesktopPane1.add(f);
        f.setVisible(true);
    }                                          

    private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {                                     ticket t = new ticket();
        jDesktopPane1.add(t);
        t.setVisible(true);
    }                                          

    private void jMenuItem6ActionPerformed(java.awt.event.ActionEvent evt) {                                    ticketreport ti = new ticketreport();
        jDesktopPane1.add(ti);
        ti.setVisible(true);
    }                                          

    private void jMenuItem5ActionPerformed(java.awt.event.ActionEvent evt) {                                     userCreation u = new userCreation();
        jDesktopPane1.add(u);
        u.setVisible(true);