禁用在Java中启用JButton

Question

I have a problem I'm trying to disable JButton with setEnabled(false) like this:

ButtonNewCustomer.setEnabled(false);

But this didn't work so then I imported the Applet packages, but still not working, then I discovered that I also needed to use extends Applet in the class, but the problem is that I'm already using extends for other things like this:

public class GUI4EX extends JFrame implements ActionListener {
...
}

I have tried to add Applet, but this dont't work! Is there a way to solve this? Thanks!

EDIT: It's working know! The problem was a misspelling of the buttonNewCustomer. The first letter 'b' was 'B'. Sorry! And thanks for the help!

Answer 1

使用setEnabled(true)启用按钮...

Answer 2

在设置框架的可见性之前，请确保禁用/启用按钮。