AJuda add componente

public class frmCadSetor extends javax.swing.JInternalFrame {
    private JToolBar t ;
    public frmCadSetor() {
        initComponents();
        this.setBounds(0, 0, 500, 150);

        t = new JToolBar();
        JButton button = new JButton();
        button.setText("Novo");
        t.add(button);

        button = new JButton();
        button.setText("Salvar");
        t.add(button);

        this.add(t, BorderLayout.PAGE_START);   // add no form         
    }
    .
    . 
    .