JComponent.WHEN_IN_FOCUSED_WINDOW : Event Queue « Event « Java



import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.KeyStroke;

public class Main {
  public static void main(String[] argv) throws Exception {

    JButton component = new JButton();

    MyAction action = new MyAction();

class MyAction extends AbstractAction {
  public MyAction() {
    super("my action");

  public void actionPerformed(ActionEvent e) {



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