how to show items in JOptionPane.showOptionDialog horizontally ?

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Java

Swing

Hi All,

I'm trying to put a TextBox & a Button in a JOptionPane.showOptionDialog horizontally.
I've used this code

JTextField txt = new JTextField();
JButton btn = new JButton("Button");
int value = JOptionPane.showOptionDialog(this,
                        new Object[]{txt, btn},
                        "Hello World",
                        JOptionPane.OK_CANCEL_OPTION, 
                        JOptionPane.INFORMATION_MESSAGE,
                        null, null, null);

But TextBox & Button showing vertically.
How can I show them in horizontally ?
Please help...
Thanks.