Centre align elements vertically with FlowLayout in jawa.awt

Question

Is there a way to center-align components vertically using the FlowLayout layout manager only? or would I need to use a different layout manager?

I have to give constant values of horizontal seperation to get elements on different lines, Is there a way to dynamically do it?

Frame frame = new Frame();
frame.setLayout(new FlowLayout(FlowLayout.CENTER,500,40)); // i have to give a constant value for horizontal separation here
frame.setSize(450,270);
frame.setVIsible(true);

What I want it to look like:

The complete main method of my program (if needed)

    public static void main(String args[]) throws IOException // frame is an instance varible
    {
        secure ob=new secure();
        Font font=new Font("SanSerif",Font.PLAIN,14);
        ob.frame.setLayout(new FlowLayout(FlowLayout.CENTER,500,40));
        ob.frame.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent windowEvent)
            {
               System.exit(0);
            }
         });
        Button b=new Button("Enter");
        TextField text = new TextField(10);
        ob.l.setSize(50,20);
        b.setSize(50,70);
        ob.frame.add(ob.l);
        ob.frame.add(text);
        ob.frame.add(b);
        ob.frame.setAlwaysOnTop(true);
        ob.frame.setTitle("Password Check");
        ob.frame.setSize(450,270);
        ob.frame.setLocationRelativeTo(null);
        ob.frame.setVisible(true);
        text.setEchoChar('*');
        ob.l.setAlignment(Label.CENTER);
        ob.l.setFont(font);
        b.addActionListener(new ActionListener()
        {
           public void actionPerformed(ActionEvent e)
           {
                String pass1 = text.getText();
                pass1=pass1.trim();
                try
                {
                    ob.check(pass1);
                    text.setText("");
                }
                catch (Exception e1)
                {
                    e1.printStackTrace();
                }
           }
        });
    }

I am new and have been researching on this for the past few days only, so may have missed out on essential information. Do correct me if I am wrong. :)