Java Action.setEnabled(boolean b)
Syntax
Action.setEnabled(boolean b) has the following syntax.
void setEnabled(boolean b)
Example
In the following code shows how to use Action.setEnabled(boolean b) method.
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
//from w ww . j av a2 s . c o m
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Action action = new ShowAction();
JButton button = new JButton(action);
frame.add(button, BorderLayout.CENTER);
frame.setSize(350, 150);
frame.setVisible(true);
}
}
class ShowAction extends AbstractAction {
public ShowAction() {
super("About");
putValue(Action.MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
putValue(Action.NAME, "Go to number ");
putValue(Action.SHORT_DESCRIPTION, "Change the number to ");
super.setEnabled(false);
}
public void actionPerformed(ActionEvent actionEvent) {
System.out.println("About Swing");
}
}
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