Diable button when text field is empty

Hi
How can I disable a button in JDialog box when the text field is empty and enable it when the user gives some input.
Balaap

Hi,
button.setEnabled(false);

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    You will have to use a keyListener since the use is not able to type into a disabled TextField. Listen for KeyEvents, if you get one enable the TextField a fill it with the char of the pressed key.
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