How to read from a JTextField without hitting any key?

Hi guys,
I have a JTextField. If the user enters data into it, i would like to read it even if he doesn't hit any enter key or Tab key or anything else. Actually, in my application, user enters data in the TextField(he doesn't hit any other key)and that should automatically trigger a setter method? Is there any actionListener which can do this?

Another way would be to use javax.swing.Timer class. This class will call the actionPerformed method every [milliseconds] (An argument in Timer's constructor). When actionPerformed is called every half-second or so, it can check for a change in the text field.

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hi there
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I think i have mixed it up :)
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How to read from a JTextField without hitting any key?

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