message boxes

what's the code to create a message box the some text in it and an ok button.

Code:

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JOptionPane.showMessageDialog(null, "Your message here", JOptionPane.PLAIN_MESSAGE);

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Chris

Info message box:

Toolkit.getDefaultToolkit().beep();
JOptionPane.showMessageDialog(null, "Message" , "Title" ,JOptionPane.INFORMATION_MESSAGE);

Error Message box:

Toolkit.getDefaultToolkit().beep();
JOptionPane.showMessageDialog(null, "Message" , "Title" ,JOptionPane.ERROR_MESSAGE);