Esistono altri due ascoltatori per lo stato e il fuoco della finestra
- WindowFocusListener
- WindowStateListener
Inoltre si può indagare sulle variazioni di posizione, dimensione e visibilità tramite l’ascoltatore generico
- ComponentListener…
Interagisci con l’applicazione e i messaggi corrispondenti appariranno nella console
import java.awt.Frame; import java.awt.event.*; public class WindowTest extends Frame implements WindowListener, WindowStateListener, WindowFocusListener, ComponentListener { public WindowTest() { this.setTitle("Prova i listener di Frame!"); this.addWindowListener(this); this.addWindowFocusListener(this); this.addWindowStateListener(this); this.addComponentListener(this); this.setSize(400, 400); this.setVisible(true); } public void windowActivated (WindowEvent we) { System.out.println("Activated" ); } public void windowDeactivated(WindowEvent we) { System.out.println("Deactivated" ); } public void windowOpened (WindowEvent we) { System.out.println("Opened" ); } public void windowClosing (WindowEvent we) { System.out.println("Closing" ); } public void windowClosed (WindowEvent we) { System.out.println("Closed" ); } public void windowIconified (WindowEvent we) { System.out.println("Iconified" ); } public void windowDeiconified(WindowEvent we) { System.out.println("Deiconified" ); } public void windowGainedFocus(WindowEvent we) { System.out.println("GainedFocus" ); } public void windowLostFocus (WindowEvent we) { System.out.println("LostFocus" ); } public void windowStateChanged(WindowEvent we) { System.out.println("StateChanged"); } public void componentMoved (ComponentEvent ce) { System.out.println("Moved" ); } public void componentResized(ComponentEvent ce) { System.out.println("Resized" ); } public void componentHidden (ComponentEvent ce) { System.out.println("Hidden" ); } public void componentShown (ComponentEvent ce) { System.out.println("Shown" ); } public static void main(String args[]) { WindowTest wt=new WindowTest(); } }