我目前正在扩展JFrame的类中运行它。关闭窗口时,我在控制台中看不到RAN EVENT HANDLER
。这不是主窗口,此窗口的多个实例可以同时存在。
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosed(WindowEvent e) {
System.out.println("RAN EVENT HANDLER");
}
});
此方法位于构造函数中调用的名为 initialiseEventHandlers()
的方法中,因此我确定代码正在运行。
我做错了什么?
谢谢!
编辑:这是完整的(摘要)代码:
public class RacesWindow extends JFrame {
private JPanel mainPanel;
private JLabel lblRaceName;
private JTable races;
private DefaultTableModel racesModel;
public RacesWindow() {
this.lblRaceName = new JLabel("<html><strong>Race: " + race.toString()
+ "</strong></html>");
initialiseComponents();
this.setMinimumSize(new Dimension(500, 300));
this.setMaximumSize(new Dimension(500, 300));
initialiseEventHandlers();
formatWindow();
pack();
setVisible(true);
}
public void initialiseComponents() {
mainPanel = new JPanel(new BorderLayout());
races = new JTable();
racesModel = new DefaultTableModel();
races.setModel(racesModel);
}
public void initialiseEventHandlers() {
System.out.println("EVENTHANDLER CODE IS CALLED"); //for debugging
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosed(WindowEvent e) {
System.out.println("RAN EVENT HANDLER");
appManager.removeOpenWindow(race.toString());
}
});
}}
public void formatWindow() {
mainPanel.add(lblRaceName, BorderLayout.NORTH);
mainPanel.add(new JScrollPane(races), BorderLayout.CENTER);
mainPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
this.add(mainPanel);
}
}
我发现我使用了错误的方法:windowClosed()
。我应该使用windowClosing()
!
这应该有效
this.addWindowListener(new WindowListener() {
@Override
public void windowClosed(WindowEvent e) {
System.out.println("RAN EVENT HANDLER");
}
});
将其添加到构造函数中。
setDefaultCloseOperation(EXIT_ON_CLOSE);
下面的
代码对我有用。
// parent class {
// constructor {
...
this.addWindowListener(new GUIFrameListener());
...
}
class GUIFrameListener extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.out.println("Window Closed");
}
}
} // end of parent class